1 . ________ it many times, I still can’t make Tom understand what I said.

A．Explaining	B．Having explained
C．To explain	D．Having been explained

2 . —How about bringing my sister to your birthday party?
—________ The more, the happier.

A．No way!	B．Why not?
C．So what?	D．Have a good time!

3 . What are scientists?They are often described as gray-haired white-coated dull scholars.

But the world has changed.Young scientists are making their voices heard and releasing their powers on the world stage.

This is also true in China.Rising stars include new materials expert Gong Yongji,university professor Liu Mingzhen,and biologist Wan Ruixue.At the age of 28 in 2018,Wan Ruixue received the 2018 Science & SciLifeLab Prize for Young Scientists.This is a global prize to reward outstanding scientists at an early stage of their careers.

She focuses mainly on biomedicine (生物医学) and artificial intelligence.“Both are cutting-edge (前沿) technologies at an early stage of development,” she said.

“So,I think they have great potential to be developed.I think in the study of cutting-edge technologies,China and other leading countries in the world are standing on the same starting line.And in the study of structural biology,China is likely to become the leader.”

She felt it was her fate to become a biologist.“I grew interested in the natural world,when I was very young,” she said.In 2009,she entered Sun Yat-sen University.

In her third year at the university,she realized that she wanted to do something related to biomedicine.So she emailed China’s top biologist Shi Yigong,hoping to join his lab at Tsinghua University.

Shi recognised her talent and welcomed her.Years of efforts at the lab have paid off.Her research on the high-definition 3D structure of spliceosome led to a scientific breakthrough.

Unlike many of other young scientists who choose to pursue further study abroad,Wan currently has no plan to go overseas.

“The whole ecosystem for scientific research is continually improving in China,” she said,adding that the country has great science facilities.

1. What does the underlined word “releasing” in paragraph 2 mean?

A．Giving out.	B．Getting over.
C．Finding out.	D．Taking over.

2. What does Wan Ruixue feel about the study of cutting-edge technologies in China?

A．Anxious.	B．Confident.
C．Disappointed.	D．Satisfied.

3. What can we learn about Wan Ruixue’s journey of becoming a biologist?

A．Her teacher led her into the field.

B．She finds it’s easier than she thought.

C．Her contribution has been recognised.

D．She thinks it’s boring but worth trying.

4. Which can be the best title of the text?

A．China’s Breakthrough in Science

B．Rising Young Scientists in China

C．Wan Ruixue:A Successful Young Scientist

D．New Image of Chinese Scientists

4 . In the dark street, there wasn’t a single person ________ she could turn for help.

A．that

B．to whom

C．who

D．from whom

5 . —Why don’t we go to the beach this afternoon? I’ve heard there are lots of tropical fish in the sea.
—______. I will bring my new video camera with me.

A．My pleasure

B．Good idea

C．It doesn’t matter

D．I’m afraid not

7 . The university estimates that living expenses for international students ________around $8450 a year, which ________a burden for some of them.

A．are; is

B．are; are

C．is; are

D．is; is

8 . — Can I pay a visit to you this Friday afternoon, manager?
— Sorry, I ________ some business partners from Huawei Company the whole afternoon.

A．have met

B．have been meeting

C．will be meeting

D．will have met

9 . —Tom, how are you doing with the job hunting?
—To be frank. I’m still hesitating whether to accept the position I _______ at the job fair.

A．had been offered

B．was offered

C．offered

D．had offered

10 . As a consequence of the spread of Covid—19, there is a growing ______ for people to work at home instead of in offices.

A．routine

B．tendency

C．category

D．evidence