1 . What caused the man feeling so hot?

A．The stronger sunshine.

B．The heat given off by his car.

C．The pollution in the air.

2 . 听下面一段较长对话，回答以下小题。
1. What is the woman doing?

A．Joining a protest.

B．Interviewing the man.

C．Giving a speech.

2. Why is the woman in front of the factory?

A．She is looking for her husband.

B．Her salary hasn’t been paid by the boss.

C．The factory is polluting the environment.

3. Who has been coughing all night?

A．The woman’s husband.

B．People in the community.

C．The workers in the factory.

4. What did the woman advise the man to do?

A．To shout with her.

B．To go to the government.

C．To cover the event.

4 . 听下面一段较长对话，回答以下小题。
1. What does the man suggest?

A．Warning drivers of air pollution.

B．Encouraging people to walk.

C．Limiting the use of cars.

2. What can be the difficulty in stopping people from driving?

A．The lack of the governments support.

B．More and more serious air pollution.

C．Peopled dependence on driving cars.

3. What does the woman think about the man’s idea?

A．It’s interesting.

B．It’s impractical.

C．It’s worth trying.

5 . 听下面一段较长对话，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.

6 . 听下面一段独白，回答以下小题。
1. Why does the speaker think our world is becoming much smaller?

A．People are using modern traffic and communication means.

B．The earth is being polluted day and night.

C．The population on the earth is growing too fast.

2. What pollution is the most serious?

A．Water pollution.

B．Noise pollution.

C．Air pollution.

3. What is the effect of noise pollution?

A．It makes us become angry more easily.

B．It makes people sleepless.

C．It is bad for all living things in the world.

4. What can we know about pollution?

A．Many countries are making rules to fight against pollution.

B．The pollution of the earth doesn’t grow as fast as the world population does.

C．Water pollution is more serious than noise pollution.

7 . 听下面一段独白，回答以下小题。
1. What is the man doing?

A．Giving a lecture.

B．Chairing a meeting.

C．Making an announcement.

2. What does the new study find about the output of greenhouse gases?

A．It grows faster than expected.

B．It goes beyond control.

C．It is below the preindustrial levels.

3. In which year did greenhouse gas output decline?

A．In 2015.

B．In 2019.

C．In 2020.

4. What is the talk mainly about?

A．Global warming caused by greenhouse gases.

B．The urgent need of reducing greenhouse gases.

C．The disasters resulting from greenhouse gases.