根据情景选句子（可以多选）。

1.你想看电视，你说：[ ]

A. Can I watch TV now?    

B. Shall we watch TV?  

C. You can watch TV.

2.晚上十点半了，爸爸可能会对你说：[ ]

A. Let's have lunch.    

B. Time to go to bed.  

C. It's time to watch TV.

3.你告诉别人现在是十点十分，你应该说：   [ ]

A. It's ten ten.    

B. It's ten o'clock.  

C.   It's ten ten o'clock.

4.下午最后一节课之后，老师可能会对你们说：[ ]

A. You may have lunch now.    

B. Shall I go home?  

C. It's time to go home.

5.当你想向别人问时间时，你说：    [ ]

A. Excuse me. What's the time?   

B. What's the time, please?  

C. What time is it?

不属于磁体主要性能指标的是（）

A.磁场强度

B.均匀度

C。梯度切换率

D.稳定性

E.孔径大小