Today is Sunday, December 2nd, everyone in Sheep Village (羊村) is very busy. What does he/she do?

I’m Nuan Yangyang. I write a letter(信) to my friend at one o’clock in the afternoon. Then I do my homework.

I’m Fei Yangyang. I want to be healthy, so I go to a sports club to play sports in the morning. I go home at three o’clock in the afternoon.

I’m Lan Yangyang. I have lunch in a restaurant（饭店）. But the food isn’t good, I don’t like it.

I’m Mei Yangyang. I go to a clothes store at nine in the morning. The clothes there are beautiful, so I buy a nice skirt.

I’m Xi Yangyang. I take the bus to the English club at ten thirteen in the morning. There I help two kids（孩子） learn to speak English.

小题1:Nuan Yangyang writes to a friend at ______.

A．9:00 am

B．1:00 am

C．3:00pm

D．1:00 pm小题2:Fei Yangyang may be ______ at 3:12 pm.

A．at school

B．in a sports club

C．on the bus

D．at home小题3:Xi Yangyang can ______ very well.

A．sing

B．dance

C．play soocer

D．speak English小题4: Which of the following sentences is RIGHT(正确)?

A．Nuan Yangyang does homework on Sunday afternoon.

B．Lan Yangyang doesn’t eat lunch in a restaurant on December 2nd.

C．Fei Yangyang has a nice skirt.

D．There are no kids in the English club.

A、B两波相向而行，在某时刻的波形与位置如图26所示，已知波的传播速度为V，图中标尺每格长度为L，在图中画出又经过t=7L/V时的波形。(参考答案)