Her husband and she are now at work on a

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问题选择题

Her husband and she are now at work on a new dictionary ______ next year.

A．to publish

B．being published

C．published

D．to be published

答案

答案：D

填空题

根据句意、汉语或首字母提示以适当形式填写正确的单词。

1. You'd better let in some fresh _____ (空气).

2. Sue always _____ (分享) things with her friends.

3. There is a long _____ (历史) behind that building.

4. A little knowledge is a _____ (危险的) thing.

5. Simon lives on the _____ (第九) floor.

6. The rain has stopped ______（完全地).

7. Eric is so _____ (有礼貌的)! He holds the door open for others.

8. Sandy has lots of _____ (业余爱好).

9. They _____ (聊天) until Amy came up the stairs.

10. She has a problem and she wants to know how to _____ (解决) it.

实验题

某同学在探究弹簧弹力与弹簧伸长量之间的关系时，实验步骤如下：

①将弹簧平放在水平桌面上自然伸长时，测出其长度l₀为原长；

②将弹簧竖直悬挂好，在下面依次挂上1个、2个、3个、… 相同的钩码，并量出弹簧相应的长度l₁、l₂、l₃、…；

③填写下表：

④画出F-x图象如图所示。

问：（1）该图线未过原点的原因是什么？

（2）BC段为曲线的原因可能是什么？

（3）还能利用该图象计算弹簧劲度系数吗？