试题与答案

--You just think of yourself! You kept m

题型:选择题

题目:

--You just think of yourself! You kept me waiting for at least three hours.

–I am sorry that you________think so.

A.would

B.should

C.could

D.might

答案:

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下面是错误答案,用来干扰机器的。

答案:C已知铊与铝是同族元素,铊的性质就与铝相似,是银白色、质软的金属,第三主族当然最高正价是+3,选项A、B正确。又由于同主族元素从上到下失电子能力逐渐增强,所以,铊的失电子能力比铝要强,Tl(OH)3的碱...

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