他经常回忆过去的往事。（修改病句） ________________________

阅读理解。

      Yang Jie is a middle school student. Today, he wants to go to the zoo with an American

friend. Now they are waiting for a bus at the bus stop. Suddenly (突然) Yang Jie finds a watch

on the ground. He asks some people, "Whose watch is it?" But the watch isn't theirs. So he

gives it to a policeman.

      When they get on the bus, they sit near the window. An old woman gets on the bus. She has

no seat. So Yang Jie stands up and says, "Here is a seat for you, granny. Please sit here."

     The American friend sees this and says, "What a good student you are!"

1. Yang Jie and his friend go to ______.

A. the school

B. the zoo

C. the bus stop

D. Yang Jie's home

2.______ is on the ground.

A. An old woman

B. An old bus

C. A watch

D. Seat

3. The watch is _______.

A. the American friend's

B. the policeman's

C. claimed by no one

D. the old woman's

4. When Yang Jie and his friend get on the bus, they sit ______.

A. behind the door

B. by the window

C. on the seats

D. next to the window

5. Why does Yang Jie's friend say he is a good student?

A. Because he is a student.

B. Because they go to the zoo together.

C. Because he finds a watch.

D. Because he helps others

下列数据结构中，能够按照“先进后出”原则存取数据的是（ ）。

A．循环队列

B．栈

C．队列

D．二又树

《水行政处罚实施办法》规定，制作调查笔录中，被调查人拒绝签名或者盖章的，水政监察人员应当怎么办？

三厢式轿车车身结构图主要零部件有哪些？