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SEVERE WEATHER AND FRONTSMEGA PACKET

Base your answers to questions 1 through 3 on the diagrams below and on your knowledge of Earthscience. The diagrams represent electromagnetic waves being transmitted (T) by a Doppler radarweather instrument and waves being reflected (R) by rain showers. This instrument producescomputer images that show the movement of rainstorms.

A) barometer B) anemometerC) precipitation gauge D) wind vane

1. Which weather instrument was used to measure the amount of rainfall from this storm?

A) gamma rays and x rays B) infrared and radio wavesC) ultraviolet and infrared D) x rays and ultraviolet

2. This Doppler radar instrument transmits electromagnetic energy in the form of microwaves. Somemicrowave wavelengths are between the wavelengths of

SEVERE WEATHER AND FRONTS

A) shorter at both locations A and BB) longer at both locations A and BC) shorter at location A and longer at location BD) longer at location A and shorter at location B

3. The computer image below shows a rainstorm over Texas. Letters A and B represent locations onEarth's surface.

If Doppler radar is used at locations A and B, as this rainstorm moves eastward, reflected wavelengthsfrom this storm will be

A) northeast B) northwest C) southeast D) southwest

4. The map below shows the amount of snowfall, in inches, produced by a lake-effect snowstorm incentral New York State.

The wind that produced this snowfall pattern most likely came from the


A) B)

C) D)

5. Which map below shows the most likely storm track for a hurricane in the Atlantic Ocean?

A) thermometer B) barometer C) psychrometer D) anemometer

6. Data from two weather instruments have been recorded on the graph below. Line A on the graphrepresents air-temperature data. Line B was plotted using the scale for variable B.

Line B on the graph represents data from which weather instrument?


A)

B)

C)

D)

7. The diagram below shows weather instruments A and B.

Which table correctly indicates the name of the weather instrument and the weather variable that itmeasures?


A) wind speed B) precipitationC) cloud cover D) air pressure

8. A weather instrument is shown below.

Which weather variable is measured by thisinstrument?

A) wind vane—wind speedthermometer—temperatureprecipitation gauge—relative humidity

B) wind vane—wind directionthermometer—dewpointpsychrometer—air pressure

C) barometer—relative humidityanemometer—cloud coverprecipitation gauge—probability of precipitation

D) barometer—air pressureanemometer—wind speedpsychrometer—relative humidity

9. Which list correctly matches each instrument with theweather variable it measures?

A) Humidity is decreasing.B) Temperature is decreasing.C) Skies are clearing.D) A storm is approaching.

10. Which weather change is most likely indicated byrapidly falling air pressure?

A) a snowstormB) a warm frontC) cool, dry airD) maritime tropical air

11. Weather-station measurements indicate that thedewpoint temperature and air temperature aregetting farther apart and that air pressure is rising.Which type of weather is most likely arriving at thestation?

A) A and B B) B and DC) C and E D) A and D

12. The map below shows high-pressure andlow-pressure weather systems in the United States.

Which two lettered positions on the map are mostlikely receiving precipitation?

A) thermometerB) sling psychrometerC) weather satelliteD) weather balloon

13. Which weather instrument has most improved theaccuracy of weather forecasts over the past 40 years?


14. Base your answer to the following question on thegraph below, which shows the average yearlytemperature and average yearly precipitation forEarth locations A through E.

A) cold and dry B) cold and humidC) warm and dry D) warm and humid

The climate indicated at location E on the graphwould most likely be classified as

A) B)

C) D)

15. Which weather station model for a New York Statelocation indicates that snow may be about to fall?


16. Base your answer to the following question on the weather map below, which shows a storm systemcentered near the Great Lakes. Letters A through D represent weather stations shown on the map.

A) cloudy skies with light snow B) cloudy skies with freezing rainC) saturated air with no precipitation D) partly cloudy skies with rain showers

What weather conditions are shown at location D?

A) sunny and fairB) cold and windyC) partly cloudy, with skies becoming clearD) cloudy, with a chance of precipitation

17. Which weather conditions are most probable whenthe moisture content of the air increases, resulting ina lower atmospheric pressure?

A) A B) B C) C D) D

18. A map of the United States is shown below.

Weather conditions in which location would be ofmost interest to a person predicting the next day'sweather for New York State?

A) ocean currentsB) seismic dataC) phases of the MoonD) air-mass movements

19. Daily weather forecasts are based primarily on

A) cooler than normal because the atmosphereis less transparent

B) cooler than normal because the atmosphere ismore transparent

C) warmer than normal because the atmosphere isless transparent

D) warmer than normal because the atmosphere ismore transparent

20. Large volcanic eruptions sometimes send dust andash into the stratosphere. After these eruptions,global air temperatures are often


A) carbon dioxide and methane gases in theatmosphere

B) oxygen and nitrogen gases in the atmosphereC) ultraviolet radiation and x rays reflected from

EarthD) visible light and radio waves reflected from

Earth

21. Global warming is most likely occurring due to anincrease in


Base your answers to questions 22 through 24 on the following map and passage. The map shows theextent of summer ice-melt zones on Greenland in 1992 and 2002. The summer melt zone is an areawhere summer heat turns snow and ice around the edges of the ice sheet into slush and ponds ofmeltwater. Three coastal locations are shown on the map.

Arctic Meltdown

Scientists are concerned because average arctic temperatures are rising. The Greenland IceSheet, the dominant area of continental ice in the arctic region, broke all previous records formelting in 2002. In 2004, the total amount of ice resting on top of the continental crust in the arctic region wasestimated to be about 3,100,000 cubic kilometers. If all this ice were to melt, the ocean levelswould rise approximately 8.5 meters. A reduction in ice-covered areas exposes more landsurfaces. This increases absorption of insolation and accelerates arctic warming. Scientistscontinue to collect data to define the role of greenhouse gases in the warming of the arctic region.

A) rougher and darker B) rougher and lighterC) smoother and darker D) smoother and lighter

22. A decrease in areas covered in snow and ice leads to an increase in the absorption of insolationbecause exposed land surfaces are


A) 51.5° N 64° W B) 70.5° N 22° W C) 64° N 51.5° W D) 22° N 70.5°W

23. What is the approximate latitude and longitude of Godthab, Greenland?

A) nitrogen and oxygen B) oxygen and siliconC) hydrogen and helium D) carbon dioxide and methane

24. Two of the greenhouse gases that may be responsible for the increased ice melting in Greenland are

A) cooler than normal because the atmosphereis less transparent

B) cooler than normal because the atmosphere ismore transparent

C) warmer than normal because the atmosphere isless transparent

D) warmer than normal because the atmosphere ismore transparent

25. Great volcanic eruptions send dust and ash into thestratosphere. Weeks after such great eruptions, airtemperatures are often

A) temperature, atmospheric pressure, andconcentration of water vapor decrease

B) temperature decreases, but atmosphericpressure and concentration of water vaporincrease

C) temperature increases, but atmospheric pressureand concentration of water vapor decrease

D) temperature, atmospheric pressure, andconcentration of water vapor increase

26. As a weather balloon released from the surface ofEarth rises through the troposphere, the instrumentsit carries will usually indicate that

A) evaporation B) precipitationC) volcanic activity D) transpiration

27. Pollutants are most likely to be removed from theatmosphere by

A) northeast B) northwestC) southeast D) southwest

28. The map below illustrates the distribution of acidrain over the United States on a particular day. Theisolines represent acidity measured in pH units.

According to the pH scale shown below the map,which region of the United States has the greatestacid rain problem?

A) B)

C) D)

29. Which graph best represents the most commonrelationship between the amount of air pollution andthe distance from an industrial city?


A) volcanic eruptions B) forest firesC) industrial activity D) precipitation

30. Atmospheric transparency is most likely to increaseafter

A) B)

C) D)

31. Which graph best shows the relationship betweentransparency of the atmosphere and the amount ofaerosols (tiny particles) put into the atmosphere?

A) volcanic eruptions B) transpirationC) radiation D) precipitation

32. Which natural event directly results in the periodiccleaning of the atmosphere?

A) Local climates are not affected by increases inpopulation density.

B) The local climate in densely populated areascan be changed by human activities.

C) In densely populated areas, human activitiesincrease the amount of natural pollutants.

D) In sparsely populated areas, human activitieshave stabilized the rate of energy absorption.

33. The climates of densely populated industrial areastend to be warmer than similarly located sparselypopulated rural areas. From this observation, whatcan be inferred about the human influence on localclimate?

A) B) C) D)

34. Which weather map symbol is used to represent violently rotating winds that have the appearance ofthe funnel-shape cloud?


A) B)

C) D)

35. The cross section of the atmosphere below represents the air motion near two frontal boundariesalong reference line XY on Earth's surface.

Which weather map correctly identifies these fronts and indicates the direction that these fronts aremoving?

A) cP B) cT C) mT D) mP

36. Which type of air mass most likely has highhumidity and high temperature?

A) B)

C) D)

37. Which weather map symbol is associated withextremely low air pressure?


A) continental polarB) continental tropicalC) maritime polarD) maritime tropical

38. The map of North America below shows the sourceregion of an air mass forming mostly over Mexico.

This air mass originating over Mexico is classifiedas


Base your answers to questions 39 through 41 on the weather map below and on your knowledge of Earth science. The map of a portion of easternNorth America shows a high-pressure center (H) and a low-pressure center (L), frontal boundaries,and present weather conditions.

A) clockwise and outward B) clockwise and inwardC) counterclockwise and outward D) counterclockwise and inward

39. The general surface wind circulation associated with the high-pressure center (H) is most likely

A) New York State B) Pacific OceanC) Gulf of Mexico D) Canada

40. What was the most likely source region for the air mass over Pennsylvania?

A) fog B) snowC) haze D) thunderstorms

41. Which weather condition is shown along the cold front?

A) 0° and 30° N B) 0° and 60° SC) 30° N and 30° S D) 60° N and 60°S

42. Dry areas caused by sinking air and divergingsurface winds are located at which two latitudes?

A) clockwise and inwardB) clockwise and outwardC) counterclockwise and inwardD) counterclockwise and outward

43. In the Northern Hemisphere, surface winds aroundthe center of a hurricane move


A) cP B) cT C) mP D) mT

44. An air mass entering Alaska from the northernPacific Ocean would most likely be labeled on aweather map as

A) warm B) stationary C) occluded D) cold

45. The weather map below shows a portion of a low-pressure system.

Which front will most likely pass over location A during the next two hours'?

A) 28°C B) 6°C C) 3°C D) –9°C

46. What is the dewpoint when the dry-bulb temperatureis 8°C and the wet-bulb temperature is 2°C?


A) air pressureB) dewpointC) relative humidityD) amount of precipitation

47. The diagram below represents a weather instrument.

Which weather variable was this instrumentdesigned to measure?


Base your answers to questions 48 through 50 on the weather map below and on your knowledge ofEarth Science. The map shows a low-pressure system with two fronts extending from its center (L).Points A, B, C, and D represents locations on Earth's surface. Two different air masses are labeled.

A) B)

C) D)

48. Which cross section best represents the frontal boundary (fb) and general pattern of air movementsbetween locations C and D?

A) A and B B) B and C C) C and D D) D and B

49. Which locations are most likely experiencing precipitation?

A) cool and dry B) cool and moistC) warm and dry D) warm and moist

50. Which atmospheric conditions describe the air mass that is influencing weather conditions at locationC?

A) an mT air mass B) a cT air massC) a cold front D) a warm front

51. The winds shift from southwest to northwest asheavy rains and hail begin to fall in Albany, NewYork. These changes are most likely caused by thearrival of


52. Base your answer to the following question on the map below, which shows the position of the jetstream relative to two air masses and a low-pressure center (L) over the United States.

A) The cP air mass is warmer and less humid.B) The cP air mass is colder and more humid.C) The mT air mass is warmer and more humid.D) The mT air mass is colder and less humid.

What is the difference in the air temperature and humidity between the cP and mT air masses?

A) B) C) D)

53. A cross section of a weather front is shown below.

Which symbol would be used to represent this front on a weather map?


A) B)

C) D)

54. The weather map below shows a portion of the United States. Line AB represents a frontal boundarybetween two air masses. The two large arrows indicate the direction that a cP air mass is moving.

Which symbol correctly represents the frontal boundary at line AB?


A) B)

C) D)

55. The map below shows surface air temperatures, in degrees Fahrenheit, reported by weather stations inthe north-central United States. Letter X represents an air mass moving in the direction shown by thearrow. A line marks a frontal boundary advancing in a southeasterly direction.

Which weather-map symbols best represent air-mass X and the frontal boundary shown on the map?


A)

B)

C)

D)

56. Which map best shows the general surface windpattern in a low-pressure system located over theeastern United States?

A) northern CanadaB) Gulf of MexicoC) Arctic OceanD) southwestern United States

57. Which geographic region is the most commonsource region for the mT air masses that move intoNew York State?


Base your answers to questions 58 through 60 on the weather map below, which shows ahigh-pressure center (H) and a low-pressure center (L), with two fronts extending from thelow-pressure center. Points X and Y are locations on the map connected by a reference line.

58. Which map best shows the most probable areas of precipitation associated with these weathersystems?

A)


B)

C)

D)


A)

B)

C)

D)

59. Which cross section best represents the fronts and air movements in the lower atmosphere along line XY?

A) stationary B) warm C) occluded D) cold

60. Which type of front is located between Buffalo and Detroit?

A) type of precipitationB) wind velocityC) moisture contentD) atmospheric transparency

61. Air masses are identified on the basis of temperatureand


62. Base your answer to the following question on the graph below, which shows air temperature,dewpoint, and present weather conditions for a 23-hour period at Dallas, Texas.

A) the arrival of a warm frontB) the arrival of a cold frontC) an increase in the difference between air temperature and dewpointD) an increase in both air temperature and dewpoint

The thunderstorm that occurred between 11 p.m. and 12 midnight was most likely the result of


63. Which type of air mass is associated with warm, dryatmospheric conditions?


A)

B)

C)

D)

64. The map below shows the boundary between two airmasses. The arrows show the direction in which theboundary is moving.

Which weather map uses the correct weather frontsymbol to illustrate this information?


65. Which weather map symbol represents air massesthat normally form just south of the United Statesover the Caribbean Sea?


Base your answers to questions 66 and 67 on the weather map below and on your knowledge of Earthscience. The weather map shows a typical low-pressure system and associated weather fronts labeledA and B. The L indicates the center of the low-pressure system. A few New York State cities areshown. Symbols cP and mT represent different air masses. The wind direction at Utica and Rochesteris shown on the station models.

66. Which map shows the regions that are most likely experiencing the precipitation associated with thisweather system?

A)


B)

C)

D)


A) B)

C) D)

67. Which front symbols are drawn correctly, based on the air masses shown?


68. On which weather map do the front symbols best represent the direction of movement of the coldfront and warm front associated with the low-pressure system shown on the map?

A)

B)


C)

D)

A) higher temperature and more water vaporB) higher temperature and less water vaporC) lower temperature and more water vaporD) lower temperature and less water vapor

69. Compared to a maritime tropical air mass, amaritime polar air mass has a


Base your answers to questions 70 through 72 on the weather map below. The map shows alow-pressure system and some atmospheric conditions at weather stations A, B, and C.


A) B)

C) D)

70. The arrows on which map best represent the direction of surface winds associated with thislow-pressure system?


A)

B)

C)

D)

71. Which cross section best represents the air masses, air movement, clouds, and precipitation occurringbehind and ahead of the warm front located between stations A and B?

A) moist and cool B) moist and warmC) dry and cool D) dry and warm

72. Which type of weather is usually associated with a cP air mass, as shown near weather station C?

A) sinking and cooling, causing water to evaporateB) sinking and warming, causing water to

evaporateC) rising and cooling, causing water vapor to

condenseD) rising and warming, causing water vapor to

condense

73. Weather along most fronts is usually cloudy withprecipitation because the warm air along most frontsis usually


Base your answers to questions 74 and 75 on theweather map of North America below. The mapshows the location of a front and the air massinfluencing its movement.

A) wind direction B) cloud coverC) moisture content D) windspeed

74. The cP air mass is identified on the basis of itstemperature and

A) cold front moving northwestwardB) cold front moving southeastwardC) warm front moving northwestwardD) warm front moving southeastward

75. Which type of front and frontal movement is shownon the weather map?

A) evaporate into a liquidB) reverse directionC) rise and form cloudsD) squeeze together to form a high-pressure

system

76. A map view of surface air movement in alow-pressure system is shown below.

The air near the center of this low-pressure systemusually will

77. Base your answer to the following question on theweather map below. Points A, B, C, and D arelocations on Earth's surface.

A) occluded B) warmC) stationary D) cold

Which type of front extends southward from thecenter of the low?


A) mT B) mP C) cT D) cP

78. Which type of air mass usually contains the mostmoisture?

79. Base your answer to the following question on the weather map below, which shows the location offronts and the temperature field on a given day in the United States.

A) Chicago and Boise B) Las Vegas and Salt Lake CityC) Kansas City and Minneapolis D) Detroit and Cincinnati

The passage of a cold front most recently influenced the weather of which two cities?

A) cT B) cP C) mT D) mP

80. Which type of air mass would most likely have lowhumidity and high air temperature?

A) geographic originB) size and shapeC) rate of movementD) direction of movement

81. The weather characteristics of air mass resultprimarily from its


A)

B)

C)

D)

82. The diagram below represents a cross section of airmasses and frontal surfaces along line AB. Thedashed lines represent precipitation.

Which weather map best represents this frontalsystem?


Base your answers to questions 83 through 85 on the weather map below, which shows a weathersystem that is affecting part of the United States.

A) B) C) D)

83. Which diagram shows the surface air movements most likely associated with the fronts?

A) B)

C) D)

84. Which map best shows the areas in which precipitation is most likely occurring? [Darkened areasrepresent precipitation.]

A) 1 B) 2 C) 3 D) 4

85. What is the total number of different kinds of weather fronts shown on this weather map?


A)

B)

C)

D)

86. The diagram below shows a cross section of acumulus cloud. Line AB indicates the base of thecloud.

Which graph best represents the temperaturemeasured along line AB?

A) cold with low humidity and high air pressureB) cold with high humidity and low air pressureC) warm with high humidity and low air

pressureD) warm with low humidity and high air pressure

87. A weather station model for a location in New YorkState is shown below.

The air mass over this location is best described as

A) cold, dry air massB) warm, dry air massC) low-pressure systemD) high-pressure system

88. The satellite photograph below shows a NorthernHemisphere cloud pattern.

The center of this cloud pattern is most likely thecenter of a


A) warm front B) cold frontC) occluded front D) stationery front

89. The cross section below shows a weather front. Thelarge arrow shows the direction of the movement ofthe cool air mass.

Which type of weather front is shown?

A) B)

C) D)

90. The diagram below represents a cross section of airmasses and frontal surfaces along line AB. Thedashed lines represent precipitation.

Which weather map best represents this frontalsystem?

A) Pressure rises and temperature falls.B) Both pressure and temperature rise.C) Both pressure and temperature fall.D) Pressure falls and temperature rises.

91. As a cold front passes a New York weather station,which changes will usually be observed inbarometric pressure and air temperature?

A) a cycloneB) a cold frontC) a stationary frontD) a high-pressure center

92. The photograph below shows a spiral pattern ofclouds in the Earth's atmosphere. The spiral ishundreds of miles across.

Which type of weather does this photograph show?

A) Cold fronts move slower than warm fronts.B) Cold fronts move faster than warm fronts.C) Warm, moist air sinks when it meets cold, dry

air.D) Warm, moist air rises when it meets cold,

dry air.

93. Which statement best explains why precipitationoccurs at frontal boundaries?


A) an anticycloneB) an area of divergenceC) a low-pressure centerD) a high-pressure center

94. In the cartoon below, the large arrows representsurface winds.

What feature is found at the location to which themeteorologist is pointing?

A) A B) B C) C D) D

95. The map below represents a section of a weathermap for locations in the eastern United States. Themap shows a low-pressure system, fronts, andweather stations A, B, C, and D.

At which weather station are weather conditionsprobably most unstable?

A) cP and cA B) cT and mPC) cP and mT D) mP and mT

96. Tornadoes occur when a very cold, dry air massmeets a very warm, wet air mass. Which two airmasses would most likely form a tornado when theymeet?

A) A B) B C) C D) D

97. The map below represents a section of a surfaceweather map showing weather stations A through D.

At which weather station are the most unstableweather conditions occurring?

A) A B) B C) C D) D

98. The weather map below shows two air pressuresystems covering a large geographic area. Points A through D identify four locations on the map.

At which location is precipitation most likelyoccurring?


99. Base your answer to the following question on themap below which represents a section of a surfaceweather map. Letters A through F represent weatherstations.

A) northeast B) northwestC) southeast D) southwest

The warm front is moving toward the

A) A B) B C) C D) D

100. Cities A, B, C, and D on the weather map beloware being affected by a low-pressure system(cyclone).

Which city would have the most unstableatmospheric conditions and the greatest chance ofprecipitation?

A) Cold air flows over warm air, causing thewarm air to descend and cool.

B) Cold air flows under warm air, causing thewarm air to rise and cool.

C) Cold air contains more dust than warm airdoes.

D) Cold air contains more water vapor than warmair does.

101. Why do clouds usually form at the leading edge ofa cold airmass?

A) The warm air is forced over both frontalinterfaces.

B) The warm air is forced under both frontalinterfaces.

C) The warm air is forced over the cold frontalinterface but under the warm frontal interface.

D) The warm air is forced under the cold frontalinterface but over the warm frontal interface.

102. The diagram below represents a cross-sectionalview of airmasses associated with a low-pressuresystem. The cold frontal interface is moving fasterthan the warm frontal interface. What usuallyhappens to the warm air that is between the twofrontal surfaces?

A) warm waters of the Atlantic Ocean insummer

B) warm land of the southeastern United States insummer

C) cool waters of the Atlantic Ocean in springD) cool land of the southeastern United States in

spring

103. Most of the hurricanes that affect the east coast ofthe United States originally form over the


A) polar air masses B) warm frontsC) tornadoes D) hurricanes

104. The weather satellite image below shows two large swirl-shaped cloud formations, labeled A and B,over the Pacific Ocean.

These large swirl-shaped cloud formations most likely represent

Base your answers to questions 105 through 108 on the satellite image below, which shows a Northern Hemisphere hurricane.

A) northwest B) northeast C) southwest D) southeast

105. When the eye of this hurricane reaches 43° N latitude, this hurricane will most likely be pushed byplanetary winds toward the


A) sinking, expanding, and cooling B) sinking, compressing, and warmingC) rising, expanding, and cooling D) rising, compressing, and warming

106. Clouds form in the hurricane because the air is

A) continental tropical B) maritime tropicalC) continental polar D) maritime polar

107. Which air mass is normally associated with the formation of hurricanes?

A) clockwise and outward B) clockwise and inwardC) counterclockwise and outward D) counterclockwise and inward

108. What is the usual surface wind pattern around the eye of Northern Hemisphere hurricanes?

A) Earth's rotationB) the prevailing northeast windsC) ocean conduction currentsD) Atlantic Ocean hurricanes

109. The map below shows part of North America.

The arrows shown on the map most likely representthe direction of movement of


Base your answers to questions 110 through 113 on the weather map below, which shows a hurricanethat was located over southern Florida. The isobars show air pressure in inches of mercury. Letters A through D represent four widely separated locations.

A) B)

C) D)

110. Which map best shows the most likely track of this hurricane?

A) counterclockwise and away from the centerB) counterclockwise and toward the centerC) clockwise and away from the centerD) clockwise and toward the center

111. What was the direction of movement of surface winds associated with this hurricane?

A) A B) B C) C D) D

112. At which location were the winds of this hurricane the strongest?

A) 26° N 81° W B) 26° N 89° W C) 34° N 81° W D) 34° N 89° W

113. What is the latitude and longitude at the center of the hurricane?


A) North America B) South AmericaC) Europe D) Africa

114. The hurricane shown on the map below isfollowing a normal storm track for the month ofSeptember.

From the position shown on the map, toward whichlandmass is the hurricane most likely traveling?

Answer KeySEVERE WEATHER AND FRONTS MEGA PACKET

1. C2. B3. D4. B5. B6. B7. D8. D9. D10. D11. C12. B13. C14. C15. A16. B17. D18. B19. D20. A21. A22. A23. C24. D25. A26. A27. B28. A29. D30. D31. C32. D33. B34. C35. A36. C

37. D38. B39. A40. C41. D42. C43. C44. C45. D46. D47. A48. B49. D50. D51. C52. C53. A54. A55. A56. B57. B58. C59. C60. D61. C62. B63. B64. A65. D66. B67. B68. B69. D70. B71. C72. C

73. C74. C75. B76. C77. D78. A79. C80. A81. A82. C83. A84. D85. D86. D87. C88. C89. B90. C91. A92. A93. D94. C95. B96. C97. B98. C99. A100. B101. B102. A103. A104. D105. B106. C107. B108. D

109. D110. A111. B112. A113. A114. A

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