根据情景，选择正确的表达。

1.当别人邀请你去踢足球时，你可以说：         [ ]

A. No, I don't.    

B. Yes, I do.    

C. Great! Let's go.

2.你想问别人是否打排球，你说：        [ ]

A. Do you like volleyball?    

B. Do you play basketball?

C. Do you play volleyball?

3.你想邀请别人现在一起去打篮球，你可以说：      [ ]

A. Do you play baseball?    

B. Let's go and play basketball now.

C. Do you like basketball?

4.当你想知道有多少男孩子打篮球时，你会问：[ ]

A. How many boys play basketball?    

B. How much is the basketball?

C. How many boys can you seer?

5.你不清楚那是不是手风琴，你会问：         [ ]

A. Is that a accordion?    

B. Is that an accordion?

C. What's this in English?

DRAM是靠MOS电路中的栅极电容上的电荷来记忆信息的。为了防止数据丢失，
需定时给电容上的电荷进行补充，这是通过以一定的时间间隔将DRAM各存储单
元中的数据读出并再写入实现的，该过程称为DRAM的______。