2 . 听下面一段独白，回答以下小题。
1. What can we learn from the article in 2017?

A．People’s interest in smartphones.

B．People’s fears of screen time.

C．People’s doubt about science.

2. What were other researchers concerned?

A．That the method was wrong.

B．That the data was not enough.

C．That the results might be misleading.

3. Why were the results different?

A．The scientists applied different sets of data.

B．The scientists focused on different situations.

C．The scientists surveyed different groups of people.

4. What aspect should people pay more attention to according to the findings in 2019?

A．What contents on kids’ phones are.

B．Whether children should be allowed to use phones.

C．How much time kids should spend on their phones.

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

A．Attending a lecture.

B．Hosting a program.

C．Holding a conference.

2. What does Susan focus on?

A．Car accidents.

B．Sickness and health.

C．Children’s safety at home.

3. Which accident happens most at home?

A．Cuts.

B．Burns.

C．Broken bones.

7 . 听下面一段独白，回答以下小题。
1. When was the National Park Service set up?

A．In 1872.

B．In 1916.

C．In 1975.

2. How many students can enjoy the transportation support each year?

A．100.

B．1,000.

C．100,000.

3. What is NatureBridge?

A．An organization.

B．A program.

C．A park.

4. Where is the Prince William Forest Park?

A．In Washington.

B．In California.

C．In Virginia.

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

A．Jack’s holiday on the seaside.

B．The boy rescued from danger.

C．The adventure that happened the day before.

2. What happened to the little boy?

A．He was badly hurt.

B．He fell off the cliff.

C．He was stuck on the cliff.

3. Who actually rescued the boy?

A．Jack.

B．The Coast Rescue Service.

C．The people nearby.