线粒体内琥珀酸进入呼吸链脱氢，将电子传递给O2 生成水所需要的

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问题单项选择题

线粒体内琥珀酸进入呼吸链脱氢，将电子传递给O2 生成水所需要的组分是

A．复合物Ⅰ、CoQ、复合物Ⅲ和复合物Ⅳ

B．复合物Ⅰ、复合物Ⅱ、CoQ、复合物Ⅲ和复合物Ⅳ

C．复合物Ⅱ、CoQ、复合物Ⅲ、细胞色素c和复合物Ⅳ

D．复合物Ⅱ、CoQ、复合物Ⅲ和细胞色素c

答案

参考答案：C

解答题

商店有红灯笼60个，卖出去8个，还剩多少个？

填空题

用括号内所给单词的适当形式填空。

1. There are many________(invent) on show in the science museum.

2. Grandfather wants some coffee. Would you mind_________(heat) the coffee?

3. The special scoop is used for__________(scoop) really cold ice cream.

4. My favorite shoes arc those with__________(adjust) heels.

5. This machine ,can _________(operate) easily, so you don't need much skill to do the job.