阅读理解，将正确答案的序号填在括号里。
       The children are on a field trip. They are very happy. Tom is taking pictures for the birds. Betty is catching
butterflies. The teacher is doing an experiment with her students. Some girls are picking up apples.
1. Where are the children?
[     ]
A. They are at school.               
B. They are at home.              
C. They are on a field trip.
2. What is Tom doing?
[     ]
A. He is taking pictures.            
B. He is playing chess.            
C. He is doing an experiment.
3. Who is doing an experiment?
[     ]
A. Betty.                                                            
B. The teacher with her students.            
C. Some girls.
4. What is Betty doing?
[     ]
A. She's picking up apples.            
B. She's catching butterflies.               
C. She's very happy.

参考答案：
1. C   2. A   3. B   4. B

阅读理解，将正确答案的序号填在括号里。
       The children are on a field trip. They are very happy. Tom is taking pictures for the birds. Betty is catching
butterflies. The teacher is doing an experiment with her students. Some girls are picking up apples.
1. Where are the children?
[     ]
A. They are at school.               
B. They are at home.              
C. They are on a field trip.
2. What is Tom doing?
[     ]
A. He is taking pictures.            
B. He is playing chess.            
C. He is doing an experiment.
3. Who is doing an experiment?
[     ]
A. Betty.                                                            
B. The teacher with her students.            
C. Some girls.
4. What is Betty doing?
[     ]
A. She's picking up apples.            
B. She's catching butterflies.               
C. She's very happy.

参考答案：
1. C   2. A   3. B   4. B