阅读理解，选出正确的答案。

      It's 8: 30 in the morning. Miss White and her students are going out for a picnic. They're going to the park

by bus. The children are having a good time. Look! Lucy and Lily are singing and dancing. They are twins.

Chen Jie is reading a story-book under the big tree. Where is Miss White? She's playing games with the other

students. But Zhang Peng and Lin Tao are fishing near the river. At 11: 00, they go home. They're very happy.

1. It's _____________[ ]

A. 8: 30 in the morning.

B. 8: 00 in the morning.

C. 8: 30 in the evening.

2. Miss White and her students are _____________.[ ]

A. at school

B. in the park

C. in the zoo

3. They go there _____________.[ ]

A. by bike

B. on foot

C. by bus

4. The twins are _____________.[ ]

A. reading a story-book

B. singing and dancing

C. playing games with the other students.

5. Zhang Peng and Lin Tao are _____________.[ ]

A. playing chess

B. flying kites

C. fishing

发声体做无规则振动时发出的声音叫_________。从环境保护的角度看，凡是妨碍人们正常休息、_________和_________的声音，以及对人们要听的声音产生干扰的声音都属于_________ 。