冲击波可以使瓦斯空气混合物气体温度产生什么变化？

句型练习。（10分）

1. His mother is 37 years old. His father is 37, too. (合并为一句)

His mother is                                           his father.

2. This book is not popular. I like it. (合并为一句)

                this book isn’t popular, I like it.

3. I have known the man for five years.（对划线部分提问）

                               have you known the man?

4. He has to go there by bus. （完成反意疑问句）

He has to go there by bus,                                ?

5. She rides a bike to school.  (改为同义句)

She goes to school                              .

Word的“自动更正”功能只可以替换文字，不可以替换图像。

A．正确

B．错误

自然生态系统中，生态位的确定是（）。

A、物种竞争形成的

B、物种演化形成的

C、物种变异形成的

D、自然形成的

（）是中国工程咨询协会的最高权力机构。

A．董事会

B．会员代表大会

C．理事会

D．常务理事会

鲧禹治水的神话记载在典籍《》中。