N_A表示阿伏加德罗常数的值，下列说法正确的是

A．密封保存的46 g NO₂气体含有的分子数为N_A

B．0.1 mol/L 碳酸钠溶液中阴离子总数大于0.1 N_A

C．标准状况下，22.4 L HF中含有的氟原子数目为N_A

D．常温常压下，7.1 g Cl₂与足量的Fe充分反应，转移的电子数目为0.2 N_A

句型转换。

1. He said, “Are you interested in English?" (合并为宾语从句)

He asked me ______ I ______ interested in English.

2. The book is a story-book. That book has a red cover. (合并为一句)

That book______ has a red cover______ a story-book.

3. When do the Smiths leave Beijins? Can you tell me? (合并为宾语从句)

Can you tell me______ the Smiths______ Beijing?      

4. Mr. Liu said to us, "I'll go to Chengdu next week." (合并为宾语从句)

Mr. Liu told us ______ ______ go to Chengdu the next week.

5. The boy wanted to watch the baseball match but didn't want to stay at home. (改为同义句)

The boy wanted to watch the baseball match______ ______ staying at home.