A.It is the jet stream that affects how fast airplanes fly.
B.Planes go slower when they are moving with the wind.
C.It takes more time to fly from NY to London than from London to NY.
D.The jet stream always blows from the east to the west across the Atlantic.
2.The word“shoot”underlined in the 2nd passage probably means“________”.
A.send for
B.move quickly
C.come out
D.grow quickly
3.It can be inferred that without gravity________.
A.buildings and other structures would float away
B.trees and buildings would not so easily fly off
C.something around your head would not float away
D.everything outside buildings would fly off into space
4.Where can we most probably read this text?
A.In a research paper.
B.In a short story.
C.In a travel magazine.
D.In a student's book.
答案与解析
[语篇解读] 本文是一篇科普文,作者向我们解释了两种自然现象:1.飞机向西飞行比向东飞行时间长的原因;2.如果地球引力突然消失将会出现的结果。
1.A 推理判断题。由第一段最后两句可知喷射气流穿过大西洋时总是从西吹向东,因此飞机顺风飞行比逆风飞行速度快,故推出喷射气流影响飞行速度,故选A。B和第一段最后一句矛盾,句中的slower应该写成faster;C和第一段第一句意思相反,句中的more应该是less;D中的from the east to the west应该是from the west to the east,故排除。
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