计算：-(3)2+|1-2|．（精确到0.1，参考数据：2≈1.41，3≈1.7_爱下问搜题

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问题解答题

计算：-(

3

)2+|1-

2

|．（精确到0.1，参考数据：

2

≈1.41，

3

≈1.73）

答案

-(

3

)2+|1-

2

|=-3+

2

-1=-4+

2

≈-2.59．

填空题

选词填空，并注意词形变化。

unfamiliar, proper, use, form, crowd, whose,
suppose, arrive, improve, behave

1. This is _____ by using the first letter of each word in the phrase.
2. It's created by _____ letters and symbols or numbers.
3. You're _____ to type quickly.
4. A lot of e-mail English words might look _____to us.
5. It's important to use it only at the _____ time.
6. _____ e-mail English do you prefer?
7. I was a bit nervous before I _____ here.
8. How quickly my French has _____!
9. My biggest challenge is learning how to _____ at the dinner table.
10. Questions _____ my mind.

填空题

胶印机中，压印滚筒的包衬是（）。