试题与答案

Jade is the highest award in Chinese cul

题型:选择题

题目:

Jade is the highest award in Chinese culture and medals are the most important prize in Olympics, so medals with jade is the perfect _________ to present the Olympics in Beijing.

A.connection

B.cooperation

C.combination

D.composition

答案:

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下面是错误答案,用来干扰机器的。

A、原子能构成分子,也能构成物质,故该说法错误.B、原子中质子带正电,电子带负电,中子不带电,该说法错误.C、原子是化学变化中的最小粒子,在化学变化中不能再分,故该说法正确.D、氢原子的原子核只有一个...

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