1 . 听下面一段较长对话，回答以下小题。
1. What do the speakers mainly talk about?

A．Robots will take jobs from humans.

B．Robots will replace humans entirely.

C．Robots will be introduced into homes.

2. How does the man think about robots?

A．They are not very friendly.

B．They break down regularly.

C．They do more with less cost.

3. What percentage of jobs will be at risk during the next decade?

A．3%.

B．15%.

C．33%.

2 . 听下面一段较长对话，回答以下小题。
1. Who is Cindy?

A．A teacher.

B．A student.

C．An environmental expert.

2. What does Cindy worry most about the future public transport?

A．The effect on the environment.

B．The arrival and departure time.

C．The high cost on it.

3 . 听下面一段独白，回答以下小题。
1. What will control the tree house’s temperature?

A．The roof.

B．The soil.

C．The leaves.

2. What is the most important design of a lizard house?

A．Producing energy.

B．Collecting sunlight.

C．Changing colors.

3. Why can the chimney be a useful air conditioner?

A．It can protect the house from strong heat.

B．It allows cool air to come in.

C．It is easy for hot air to flow out.

4 . 听下面一段独白，回答以下小题。
1. What is the main topic of the talk?

A．Man-made meat.

B．Methods of farming.

C．The price of animal meat.

2. How is the animal industry described in the talk?

A．Useful.

B．Wasteful.

C．Powerful.

3. How much cheaper might man-made meat be by 2030?

A．Twice.

B．Five times.

C．Ten times.

5 . 听下面一段独白，回答以下小题。
1. What will control the tree house’s temperature?

A．The roof.

B．The leaves.

C．The soil.

2. What is the most important design of a lizard house?

A．Changing colors.

B．Collecting sunlight.

C．Producing energy.

3. Why can the chimney be a useful air conditioner?

A．It allows cool air to come in.

B．It is easy for hot air to flow out.

C．It can protect the house from strong heat.