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閱讀理解：
We are so used to our life on the surface of the earth that it can be quite an effort for our mind to break free of all the ideas that we take for granted.Because we can feel that things are heavy,we think of “weight” as being a fixed quality in an object,but it is not really fixed at all.If you could take a one-pound packet of butter 4,000 miles out from the earth,it would weigh only a quarter of a pound.
How much would four pounds of tea weigh if it was taken 4,000 miles out from the surface of the earth?
A.1 pound.
B.2 pounds.
C.3 pounds.
D.4 pounds.
正確答案：A
答案解析：本題問的是一磅茶如果被帶出離地球表面4000英里的地方，重量會(huì)是多少？4000這個(gè)數(shù)字比較關(guān)鍵，因?yàn)樵诒径巫詈笠痪渲谐霈F(xiàn)了這個(gè)詞，一看該句If you could take a one-pound packet of butter 4,000 miles out from the earth,it would weigh only a quarter of a pound.只是把名詞換了一下，很顯然答案就是變成原來重量的四分之一，因此正確答案是A.
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