简述美术教学大纲的内容。

根据句意及首字母提示填空。

1. The Spring Festival is one of the most t____ festivals in China.

2. Now more and more people own p____ computers.

3. There is h____ any milk in the bottle, is there?

4. China, Korea and Japan are all A____ countries.

5. —Where shall we meet?—Let's meet o____ the school gate.

If we _____ nothing, there _____ fewer and fewer tigers  in the world. [ ]

A. will do; will be    

B. do; will be      

C. don't do; will be    

D. do; will have

若串s="Program"，则其子串的数目是 【3】 。

只用于（）的数据项目是签发人标识。

发动机每工作（）h，应对发动机机油进行取样化验。

A.50

B.100

C.200