问题 选择题

下列说法中,正确的是(  )

A.水分子是由一个氢分子和一个氧原子构成的

B.原子是构成物质的最小粒子

C.地壳中含量最多的金属元素是铁元素

D.含氧的化合物可能不是氧化物

答案

A、水分子是由氢原子和氧原子构成的,故A错误;

B、原子是化学变化中最小粒子,不是构成物质的最小粒子,故B错误;

C、地壳中含量最多的金属元素是铝元素,不是铁元素,故C错误;

D、含氧的化合物可能不是氧化物,例如高锰酸钾含有氧元素,但它不是氧化物,故D正确;

故选D.

完形填空

Do you think of your parents? “Yes,of course,” you may answer,“I buy a present for my mother on Mother’s Day.And I give my father a present on Father's Day, ① .” Then what about the other days of a year? Always remember to think of your parents,not just on some important days.

I have a friend who lives alone,because her parents live in another city. One day I went to see her. We had a nice chat. Then she wanted to make a call.She dialed(拨)the number,but then she put the phone down.After about ten seconds,she dialed the number  ②  . “Hi,Mum…”

Later I asked,“Why did you dial the number twice?” She smiled,“My parents are old. They can't get close to the telephone quickly . I always do so when I call them. ③I just want to give them enough time to answer the call.”

My friend is a good girl. She is always thinking about her parents. You also want to be a good child, right? So why not learn from her?

小题1:将①②处填上适当的单词 ___________    ______________

小题2:将第③翻译成中文。

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小题3:回答问题: How many times does the friend dial the number?

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小题4:在文章中找出同义句:We have a good time chatting.

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小题5:找出本文的中心句。

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单项选择题