选择能代替画线部分的选项。

1.On Sundays, I usually get up at about eight o'clock.    

A. around  

B. for  

C. round  

D. with

2. —When do you usually do your homework?  

    —At seven o'clock in the evening.    

A. What    

B. What time    

C. What's time    

D. What's the time

3. My father runs at 6:00 a.m. every day.    

A. in the morning    

B. in the evening    

C. in the afternoon    

D. at night

4. My little sister loves to listen to Li Yuchun's songs.    

A. likes    

B. works    

C. starts    

D. knows

5. School starts at 8:00 a.m.    

A. begin    

B. begins    

C. go      

D. goes

在一定观测条件下，偶然误差的绝对值( )超过一定的限值。

A．一般不会

B．一定会

C．通常会

D．一定不会