“归纳与比较”是化学学习的主要方法． （1）下列关于C02与C0的不同点： A．

用所给动词的适当形式填空。

1. How often             your mother              (go) shopping?

2. Peter              (go) to watch the basketball match if he is free tomorrow.

3. Linda              (visit) the Science Museum next Sunday.

4. Mr Huang              (teach) us English two years ago.

5. Mr Green              (live) in Beijing since he came to China.

6. The Kings              (watch) TV at this time last night.

7. Tony will come to my birthday party if it             (not rain) tomorrow.

8. My cousin is a student and he             (study) at a middle school nearby.

9. My father              (be) to Beijing three times this year.

10. Listen! Who              (play) the piano in the next room?

中期妊娠引产时静脉点滴缩宫素诱发宫缩的最大浓度为（）

A.1%

B.2%

C.3%

D.4%

E.5%

物资验收入库，是仓库保管作业的（）。

A.起点

B.中点

C.终点

汽车罐车采样时，采样器需下降到罐内油品的（）位置。

A、1/3处

B、1/2处

C、2/3处

D、3/4处

具有升阳举陷、托毒生肌、利水消肿功效的药物是（）

A.人参

B.西洋参

C.党参

D.太子参

E.黄芪