15.Being able to tell the truth
at last seemed to ________ her.
A.calm
B.relieve
C.comfort
D.anger
答案:B 句意:讲出真话似乎使她感到轻松。calm“使……镇静”;comfort“安慰”;anger“使……生气”,均不合乎句意。
Ⅳ.阅读理解
A
Have you ever wondered?
1. Why do airplanes take longer to fly west than east?It can take five hours to go westeast from New York NY to London but seven hours to travel eastwest 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 westeast 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 shoot upwards at a great speed until they hit the ceiling. Most things outside would fly off into space.
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