题目内容

3．Researchers have been determined to ______ how bird flu spreads from human to human worldwide．（　　）
A．turn outB．figure outC．pick outD．check out

分析 研究人员决定要找出禽流感是如何在世界范围内进行人与人之间传播的．

解答 答案：B．
turn out结果是，证明是，figure out找出，算出；pick out挑选出；check out检验，校验，结账．根据句意"要找出禽流感是如何在世界范围内进行人与人之间传播的"可知，只有figure out与此相吻合；故选B．

点评 动词短语的意思要弄明白，并结合句意和句子之间的逻辑关系进行分析，选出正确答案．

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2．1．Why do airplanes take longer to fly west than east？
It can take five hours to go west-east from New York （NY） to London but seven hours to travel east-west from London to NY．The reason for the difference is an atmospheric phenomenon known as the jet（喷射）stream．The jet stream is a very high altitude wind which always blows from the west to the east across the Atlantic．The planes moving at a constant air speed thus go faster in the west-east direction when they are moving with the wind than in the opposite direction．
2．What would happen if the gravity on Earth was suddenly turned off？
Supposing we could magically turn off gravity．Would buildings and other structures（建筑物）float away？What happened would depend on how strongly the things were attached to the Earth．The Earth is moving at quite a speed，moving at over a thousand miles per hour．If you turn something around your head on a string（细绳），it goes around in a circle until you let go of the string．Then it flies off in a straight line．‘Switching off'gravity would be like letting go of the string．Things not attached to the Earth would fly off in a straight line．People in buildings would suddenly shootupwards at a great speed until they hit the ceiling．Most things outside would fly off into space．

60．What information can we get from the first passage？A
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D．The jet stream always blows from the east to the west across the Atlantic．
61．The word"shoot"underlined in the 2nd passage probably means"B"．
A．send for                                         
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62．It can be inferred that without gravityB．
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C．something around your head would not float away
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63．Where can we most probably read this text？D
A．In a research paper．
B．In a short story．
C．In a travel magazine．
D．In a student's book．
4．飞机起飞前，乘务员的职责之一就是确保所有乘客都系好安全带．（ensure）Before the plane takes off，one of the flight attendants duties is to ensure that all the passengers have fastened their safety belts．．

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