开展“两学一做”学习教育，要以（）为基本要求。A、尊崇 * * B、遵守党规C、用习 * * 总

补全单词。

1. If you have a t _____, you should see a dentist.

2. The little girl's i _____  (ill) is very serious, we must take her to the hospital at once.

3.  —I have a sore throat.

     —You should drink lots of w _____ .

4. She has a fever .She should lie down and r_____ .

5. I'm not feeling w_____ , I have a cold.

She looks sad. Could you please tell me      that prevents her from being as happy as before?[ ]

A. what it is    

B. it is what    

C. how it is      

D. it is how

设某数据库中有商品表(商品号，商品名，商品类别，价格)。现要创建一个视图，该视图包含全部商品类别及每类商品的平均价格。清补全如下语句：
CREATE VIEW V1(商品类别，平均价格)
AS
SELECT商品类别，______FROM商品表
GROUP BY商品类别

聚丙烯是一种非（）塑料，具有良好的化学稳定性能。

A.极性

B.合成

C.结晶

D.流体