84.I felt very disappointed when my repeated request that I join the club was _______( 拒绝　 ). 85.According to his _______( 先前的 ) experience in driving cars , he must be very careful when it is snowing.　　　　　　　　　　　　　 　　　

第二卷(共35分)

83.He was ________ (沮丧　 ) when he heard the bad news .

82.My camera can be _______(调节　 )to take pictures in cloudy or sunny conditions.　

81.The agency offers practical _______(　 指导　 ) to people staring their owwn business.

80.The examiner will test your a______to drive under normal road conditions.

79.The elderly need special care in winter , as they are s______to the sudden change of weather.

78.A scientist should be a person who has c________about things.

77.At last , we can’t help showing m_____to the beggar .

76.The police c_______ him of stealing a car and put him into prison .

E

　　 Against the assumption that forest fires in Alaska, Canada and Siberia warm the climate, scientists have discovered that cooling may occur in areas where burnt trees allow more snow to mirror more sunlight into space.

　　　 This finding suggests that taking steps to prevent northern forest fires to limit the release of greenhouse gases may warm the climate in northern regions. Usually large fires destroyed forests in these areas over the past decade. Scientists predict that with climate warming, fires may occur more frequently over next several centuries as a result of a longer fire season. Sunlight taken in by the earth tends to cause warming, while heat mirrored back into space tends to cause cooling.

　　　 This is the first study to analyze all aspects of how northern fires influence climate. Earlier studies by other scientists have suggested that fire in northern regions speed up climate warming because greenhouse gases from burning trees and plants are released into the atmosphere and thus trap heat.

　　　 Scientists found that right after the fire, large amounts of greenhouse gases entered the atmosphere and caused warming. Ozone(臭氧)levels increased, and ash from the fire fell on far-off sea ice, darkening the surface and causing more radiation from the sun to be taken in. The following spring, however, the land within the area of the fire was brighter than before the fire, because fewer trees covered the ground. Snow on the ground mirrored more sunlight back into space, leading to cooling.

　　　 “We need to find out all possible ways to reduce the growth of greenhouse gases in the atmosphere.” Scientists tracked the change in amount of radiation entering and leaving the climate system as a result of the fire, and found a measurement closely related to the global air temperature. Typically, fire in northern regions occurs in the same area every 80 to 150 years. Scientists, however, found that when fire occurs more frequently, more radiation is lost from the earth and cooling results. Specifically, they determined when fire returns 20 years earlier than predicated, 0.5 watts per square meter of area burned are soaked up by the earth from greenhouse gases, but 0.9 watts per square meter will be sent back into space. The net effect is cooling. Watts are used to measure the rate at which energy is gained or lost from the earth.

72. According to the new findings, taking steps to prevent northern forest fires may _______.

　 A. result in a warming climate 　　

B. cause the forest fires to occur more frequently

　 C. lead to a longer fire season　　　　　　　　　　　　　　

D. protect the forests and the environment there

73. Earlier studies about northern forest fires ________.

　 A. analyze all aspects of how northern fires influence climate

　 B. indicate that forest fires will pollute the atmosphere

　 C. suggest that people should take measures to protect environment

　 D. suggest that the fires will speed up climate warming

74. The underlined phrase “soaked up” in the last paragraph most probably means ________.

　　　 A. released　　　 　 B. absorbed　　　 　　 C. created　　　 　　　 D. disturbed

75. From the text we can draw a conclusion that forest fires in Alaska, Canada and Siberia may ______.

　　　 A. warm the climate as the assumption goes

　　　 B. allow more snow to reflect more sunlight into space and thus cool the climate

　　　 C. destroy large areas of forests and pollute the far-off sea ice

　　　 D. help to gain more energy rather than release more energy .

第四节　 单词拼写　 (共10分)