1 . 听下面一段独白，回答以下小题。1.

A．It prevents oceans from oil pollution quickly.

B．It effectively improves air quality on airplanes.

C．It treats diseases happening on airplanes quickly.

D．It costs more but can be easily fixed into airplanes.

2.

A．To inspire teenagers to challenge the authorities.

B．To persuade more teens to do good for society.

C．To get more teens involved in scientific competitions.

D．To encourage young people to get interested in science.

3.

A．More than 30% of finalists received awards and prizes.

B．Scientists all over the world competed for grand prizes.

C．Nearly 1000 judges were present at the competition.

D．The prize money was offered by Intel alone.

2 . 听下面一段独白，回答以下小题。
1. Who started the competition?

A．A bus company.

B．A teacher.

C．A student.

2. What are the participants invited to do?

A．Organize a program.

B．Write an essay(文章).

C．Plant a garden.

3. What will the winning school receive besides some money?

A．A lot of computers.

B．A hybrid school bus.

C．Some beautiful lights.

4. What is the advantage of the hybrid school bus over the ordinary one?

A．It is much safer.

B．It runs much faster.

C．It creates less pollution.

6 . 听下面一段独白，回答以下小题。
1. What issue are the scientists working on?

A．Climate change.

B．Electric vehicles.

C．Public transport.

2. Which country is the first one to provide free public transport service?

A．Luxembourg.

B．Germany.

C．The United States.

3. When did electric buses start running in Glasgow?

A．In July 2019.

B．In January 2020.

C．In March 2020.

7 . 听下面一段较长对话，回答以下小题。
1. How does the woman often get to work?

A．On foot.

B．By car.

C．By bike.

2. Why did the man sell his car?

A．He spent too much money repairing it.

B．He thought having a car made him lazy.

C．He thought it was bad for the environment.

3. What do we know about the woman?

A．She likes doing exercise.

B．She wants to lose some weight.

C．She has never ridden a bike to get around.

4. Where will the speakers go next?

A．To a car factory.

B．To a car repair shop.

C．To a car dealership.