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【单选题】
大环结构难合成的原因主要是：A.
分子角张力较大
B.
分子自身稳定性较差
C.
过程中分子内氢原子间拥挤相互排斥
D.
的两端碰撞几率因链增长而减小，分子间概率增加
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举一反三
【单选题】If foreigners suddenly reduced their investments in the United States, what would happen?
A.
The value of the dollar on foreign exchange markets would increase.
B.
The action would have no impact on the U.S. economy.
C.
The foreigners would sell U.S. dollars for another currency.
D.
The price of U.S. exports would increase.
【简答题】Listen to the dialogue, and decide whether the statements are true or false. If it is true, put “T” in the space provided and “F” if it is false. 1. ______ No man can be regarded as a real man unless...
【单选题】We read the news some foreigners would visit our school.
A.
when
B.
as if
C.
that
D.
why
【单选题】Foreigners would ( ) the Pyramid with Egypt . ( ), we Chinese often think of Beijing when mentioning China .
A.
associate; Likewise
B.
appreciate; Likewise
C.
associate; Likely
D.
appreciate; Likely
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