In New Delhi (新德里), India, the air is polluted. It is so bad — many people do not go outside. Students do not go to school. Old people take walks inside the house. Ill people stay in rooms. Only young workers go to work.

1.1.“Polluted” may mean (意思是) ______.

A 被净化

B 被改变

C 被污染

D

解析：选C。C 词义猜测题。根据划线单词后文的“It is so bad — many people do not go outside.”这太糟糕了，很多人都不出门。由此可猜测，空气被污染了。故选D。

2.2.Students ______ school.

A stay at

B go to

C don’t go to

D

解析：选C。C 细节理解题。根据“Students do not go to school.”可知，学生不去上学。故选C。

3.3.Who take walks in the house?

A The young.

B The old.

C The sick.

D

解析：选B。B 细节理解题。根据“Old people take walks inside the house.”可知，老人在室内散步。故选B。

4.4.Do workers go outside?

A Yes, they do.

B No, they don’t.

C Yes, they are.

D

解析：选A。A 推理判断题。根据“Only young workers go to work.”可知，年轻的工人出门去工作，即他们会外出。故选A。