下列叙述中不正确的是（） A．化学是研究物质的组成、结构

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问题选择题

下列叙述中不正确的是（　　）

A．化学是研究物质的组成、结构、性质以及变化规律的科学

B．化学是一门以实验为基础的科学

C．阿伏加德罗发现元素周期律和周期表

D．化学使世界变得更加绚丽多彩

答案

答案：C

填空题

动词填空。

1.Would you please give me some advice on ________ (swim)?

2.I’d like to, but I have something ________ (wash) today.

3.Nothing ________ (be) difficult if we put our heart into it.

4. ________ (not be) late for school.

5.Just now, Mr. Smith ________ (invite) us to join the skiing competition.

6.Don’t make any noise, Grandma ________ (sleep).

7.I’ll wait here for your mother until she ________ (return) from work.

8.The monkey ________ (hide) themselves under the trees when it was rainy.

9.He with his friends usually ________ (play) football after school.

10.What are yon going to do? How about ________ (go) out to play football?

多项选择题

同一路线价区段的划分应是()

A.地价不等地段

B.地价相等地段

C.地段相连的路段

D.地段不相连接

E.性质相差大的地段