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问题 解答题

小华家前面的墙壁长8米，宽4米，其中门窗面积共有4平方米，现在要粉刷这面墙壁，要粉刷的面积是多少平方米？

答案

要粉刷的面积：8×4-4=28（平方米）．

答：要粉刷的面积是28平方米．

判断题

隧道防排水技术主要是以排为主，以防为辅。( )
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填空题

用所给词的适当形式填空。

1. — Where is Mr. Wang?

    — He ______ (go) to the library. He wants to borrow some library books.

2. At first she ______ (think) about going camping, but later she changed her mind.

3. They are from ______ (foreigner) countries.

4. I ______ (discover) the truth, but I couldn't tell it to others.

5. How long have you been ______ (wait) here?

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