4 . 听下面一段独白，回答以下小题。
1. What are the good seeds confirmed by?

A．Containers.

B．X-rays.

C．Freezers.

2. Why are seeds stored in frozen environment?

A．To be preserved for long.

B．To tackle climate change.

C．To safeguard food supply.

3. What is the speech mainly about?

A．Where seeds are stored.

B．How the seed bank works.

C．Why seed banks are important.

9 . 听下面一段独白，回答以下小题。
1. When did Mr. Mendel discover the reason of our likeness to parents?

A．In 1860.

B．In 1869.

C．In 1953.

2. What did the scientists find in 1961?

A．All the “words” in the DNA map.

B．The first understandable DNA “word”.

C．The functions of all the DNA “words”.

3. What can we do by understanding “words” in the DNA map?

A．Cure some diseases.

B．Test new medicine on animals.

C．Gather information for the sick.

4. What does the speaker mainly talk about?

A．The ways of DNA treatment.

B．The famous biology scientists.

C．The process of understanding DNA.

10 . 听下面一段较长对话，回答以下小题。
1. What do people in Bell Labs do?

A．Conduct research in communication.

B．Study the connection between IQ and EQ.

C．Train engineers to be star workers.

2. What is the difference between the studied star workers and others?

A．Academic qualifications.

B．Working years.

C．Emotional intelligence.

3. Why can the star workers get an answer right away?

A．They have higher IQ.

B．They gain access to more resources.

C．They are quicker to send out emails.

4. What is the purpose of the conversation?

A．To introduce the benefits of EQ.

B．To talk about a study.

C．To discuss human relationships.