成人英语三级

Part IV Cloze (10%)

Directions: There are 20 blanks in the following passage, and for each blank there are 4 choices marked A, B, C and D at the end of the passage. Then blacken the corresponding letter on the Answer Sheet.

Scientists say that something very serious is happening to the earth. It will begin to get __56__ in the following years. There will be major changes in ___57__ in the new century. Coastal waters will have a __58__ temperature. This will have a __59__ effect on agriculture. In northern areas, the __60__ season will be ten days longer by the year 2010. However, in warmer areas, it will be too dry. The __61__ of water could __62__ by eighty percent. This would __63__ a large decrease in agriculture production.

World temperature could __64__ two degrees centigrade by the year 2040. However, the increase could be three times as great in the Artic and Antarctic area. This could cause the __65__ sheets to melt and raise the __66__ of the oceans __67__ one to two meters. Many coastal cities would be __68__ water.

Why is this happening? There is too __69__ carbon dioxide in the air. __70__ oil, gas and coal burn, they create large amounts of carbon dioxide. This carbon dioxide lets __71__ enter the earth’s atmosphere and __72__ the earth. However, it doesn’t let as much heat __73__ the atmosphere and enter space. It’s like a blanket. The heat __74__ the sun can pass through the blanket to warm the earth. The heat __75__ there and can’t escape through the blanket again.
Scientists call this the green-house effect.

56. A warmer   B colder   C better   D worse

57. A land   B agriculture   C climate   D weather

58. A lower   B higher   C normal   D proper

59. A good   B general   C serious   D useful

60. A getting   B playing   C taking   D growing

61. A much   B many   C amount   D number

62. A fall   B decrease   C refuse   D rise

63. A lead   B keep   C make   D cause

64. A increase   B drop   C lift   D realize

65. A water   B rain   C stone   D ice

66. A degree   B level   C coast   D area

67. A by   B to   C of   D with

68. A above   B under   C below   D over

69. A little   B many   C few   D much

70. A If   B Because   C When   D Why

71. A sunlight   B air   C rain   D gas

72. A cold   B protect   C hurt   D heat

73. A enter   B get   C leave   D reach

74. A through   B by   C from   D on

75. A stores   B arrives   C stands   D stays

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