2 . 听下面一段较长对话，回答以下小题。
1. Why does the factories dump waste to the river?

A．To follow the trend.

B．To cut down on cost.

C．To avoid being punished.

2. What does air pollution have caused to people nearby?

A．They are sent to the hospital.

B．They have sore eyes.

C．They cough a lot these days.

3. How will the speakers react to the unlawful act?

A．They will talk with the factory director.

B．They will report it to the police.

C．They will go to buy masks.

3 . 听下面一段独白，回答以下小题。
1. Why does the speaker mention the ancestors in the beginning of the text?

A．To make a comparison.

B．To introduce their lives.

C．To thank them.

2. What does the speaker think of outdoor lighting in most cities?

A．It is not helpful most of the time.

B．It plays an important role in city lives.

C．It is too bright and sometimes unnecessary.

3. What have many cities in the world done?

A．They have made changes in the use of outdoor lighting.

B．They have passed some laws to stop wasting energy.

C．They have organized many environmental activities.

4. What is the text mainly about?

A．Electrical energy.

B．Light pollution.

C．The importance of lights.

5 . 听下面一段独白，回答以下小题。
1. What does the speaker talking about?

A．Noise pollution.

B．Human voice.

C．Good old days.

2. What does “you can’t hear yourself think” mean?

A．You have trouble with your head.

B．You are too stressed out.

C．It’s very noisy.

3. How many ways of reducing harm caused by noise are mentioned?

A．Four.

B．Three.

C．Two.

4. What is the main purpose of the speech?

A．To introduce a saying.

B．To call on people to act.

C．To explain scientific knowledge.

6 . 听下面一段较长对话，回答以下小题。

1. Why does the factories dump waste to the river?

A．To follow the trend.

B．To cut down on cost.

C．To avoid being punished.

2. What does air pollution have caused to people nearby?

A．They are sent to the hospital.

B．They have sore eyes.

C．They cough a lot these days.

3. How will the speakers react to the unlawful act?

A．They will talk with the factory director.

B．They will report it to the police.

C．They will go to buy masks.

7 . 听下面一段对话，回答以下小题。

1. What animal is in the video that the woman saw?

A．A duck.

B．A turtle.

C．A fish.

2. What do scientists think could happen by 2050?

A．There will be fewer fish in the sea than plastics.

B．50% of the fish in the ocean will die.

C．All businesses will stop using straws.

3. Where will the speakers go next?

A．To a restaurant.

B．To a gift shop.

C．To a coffee shop.

8 . What are they talking about?

A．The pollution in the air.

B．Smoke coming from the school.

C．Measures taken by the school.

9 . 听下面一段较长对话，回答以下小题。
1. Who kept the man informed of most related information?

A．The staff.

B．The students.

C．The cleaners.

2. What waste was most commonly seen in the university?

A．The paper copying.

B．The paper cups.

C．The plastic cups.

3. What proportion of interviewees were worried about waste?

A．55%.

B．45%.

C．30%.

4. What does the woman suggest to raise people’s awareness?

A．Putting up a poster.

B．Holding an exhibition.

C．Delivering a lecture.