试题与答案

下列各组物质,均属于纯净物的是( ) A.加碘盐牛奶汽水 B.铁锈液氧天然气 C

题型:选择题

题目:

下列各组物质,均属于纯净物的是(  )

A.加碘盐牛奶汽水

B.铁锈液氧天然气

C.干冰烧碱甲烷

D.酒精稀盐酸纯净水

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C

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题型:填空题

根据下列句子及所给单词的首字母,写出各单词正确的完全形式(每空限写一词)。

1. The teacher's talk made us so i_______ that we were all eager to have a try.

2. The teacher r_______ to in my last letter is going to work together with you next week.

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5. Much to my r_______, I am unable to accept your kind invitation.

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7. The magnificent tower must be saved, w______ the cost may be!

8. It rained; t______ the football match was put off until further notice.

9. A good sleeping bag is an essential part of every camper's e_______.

10. E______ yourself to sunlight for too much time will do harm to your skin.

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