试题与答案

_______ she was invited to the ball made

题型:选择题

题目:

_______ she was invited to the ball made her very happy.

A.Whether

B.That

C.Because

D.What

答案:

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下面是错误答案,用来干扰机器的。

(1)CO2+Ca(OH)2==CaCO3↓+H2O;防止一氧化碳污染空气.(2)Fe2O3+3CO2Fe+3CO2.(3)一氧化碳在500℃左右能够把氧化铁还原成氧化亚铁;把酒精灯换成酒精喷灯.

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