物质是由各种粒子构成的。若用“”表示水分子。下列从粒子的角度对物质的变化或性质作

按要求改写下列各句, 每空一词。

1. Jack knows my name. (改为否定句)

    Jack_____ _____ my name.

2. Ann has a brother. (改为一般疑问句)

    _____ Ann_____ a brother?

3. Do they like eggs? (作肯定回答)

    _____, _____ _____.

4. We all learn Chinese. (改为同义句)

    _____of _____ learn Chinese.

5. Lily has ten pencils. (对画线部分提问)

    _____ _____ pencils _____ Lily have?

6. We have a soccer ball. (改为否定句) 

    We ______ _____ a soccer ball.

7. Jiang Feng has a baseball. (对画线部分提问)

    _____ _____ Jiang Feng _____?

8. Sue has a small sports collection. (改为否定句)

    Sue _____ _____ a small sports collection.

Some people try to knock me down, only______ me more determined to do better.    [ ]

A. to make        

B. makes    

C. having made  

D. made

更换卷绕头双转子时，应保证奇数头之间，偶数头之间叶片的位置（）。

A.相似

B.一致

C.无要求

D.奇偶不分

对外贸易合同、协议规定以检验检疫证书为交接、结算依据的进出境货物，报检人应向检验检疫机构报检。

生产中聚丙烯的等规度是如何控制的？