2 . “Smile and the world smiles at you.”

One day on the subway, I noticed my daughter, Alex, I _________at someone who, in turn, smiled back. This small but kind gesture (动作) brought about a great _________ about life.

Alex _________ the story about where she learned about the power of a smile. Back when Alex was a teenager, she _________ a youth program led by the top motivational (激励人心的) speakers in the world who were willing to share their _________. One of them was W Mitchell, who had gone through a very _________ situation. First, he had a motorcycle accident where his _________was burned. Then he lost both his legs in a plane crash.

The way Alex _________ it, Mitchell told a story about how a stranger_________ his life. After the motorcycle accident, he refused to go outside. He ____________that people might hate him because of his face. One day when he decided to have a try ____________, he met a little girl. Instead of being____________, she looked at him and smiled. He was ____________by her and got his hopes for life back again.

Alex said. “After hearing his story. I ____________ that a smile is enough to change someone’s life. So I   ____________ smiling and saying hello to everyone.”

Later that day, as we were ____________, I noticed many salespeople were smiling at us. I used to feel ____________when strangers looked at me, but this time I ____________ smiled back and felt more relaxed than ever before.       

A smile is a small but ____________ gesture. It takes little effort, but has an important influence at work and in life. When you get into the ____________ of smiling at others, you’ll notice how many people smile back at you.

1.

A．pointed

B．smiled

C．looked

D．shouted

2.

A．conversation

B．question

C．feeling

D．certainty

3.

A．created

B．heard

C．shared

D．wrote

4.

A．organized

B．attended

C．left

D．needed

5.

A．studies

B．advantages

C．hobbies

D．experiences

6.

A．difficult

B．common

C．strange

D．good

7.

A．arm

B．face

C．hand

D．foot

8.

A．liked

B．understood

C．agreed

D．remembered

9.

A．changed

B．saved

C．entered

D．took

10.

A．replied

B．suggested

C．worried

D．checked

11.

A．smartly

B．luckily

C．honestly

D．bravely

12.

A．happy

B．frightened

C．amazed

D．angry

13.

A．forgotten

B．refused

C．encouraged

D．praised

14.

A．realized

B．doubted

C．imagined

D．expected

15.

A．finished

B．avoided

C．minded

D．started

16.

A．reading

B．running

C．shopping

D．singing

17.

A．dangerous

B．unbelievable

C．confused

D．uncomfortable

18.

A．just

B．once

C．still

D．never

19.

A．interesting

B．boring

C．powerful

D．useless

20.

A．business

B．habit

C．problem

D．spirit

3 . 听下面一段独白，回答以下小题。
1. Where is the starting line?

A．At Fenghe Road.

B．At the World Expo site.

C．At the Sports Center.

2. Who will not be invited to the race?

A．Foreign runners meeting health requirements.

B．The top runners from other countries.

C．Those registered on the website.

3. What can the Champion win?

A．50, 000 yuan.

B．80, 000 yuan.

C．100, 000 yuan.

5 . The “junk DNA” may be useful in developing future cancer treatments, according to a new report in the journal Nature Immunology. The discovery was led by Wilmot Cancer Institute investigators and University of Rochester biologists Vera Gorbunova, Ph.D., and Andrei Seluanov, Ph.D..

The DNA elements under research are known as retrotransposons (逆转录转座子). The bad side of them is that if left to run amok, they can give rise to tumors (肿瘤). Researchers, however, discovered that if they are kept in the correct balance and controlled properly, retrotransposons can cause the immune system to destroy cancer.

Much of the Gorbunova and Seluanov lab’s work involves the blind mole rat (鼹鼠), which lives underground and seems unaffected by cancer. In the latest scientific paper, researchers found that the anti-cancer approaches behind retrotransposons are present in human cells, and planned to use the information to find new ways to stop cancer cell growth.

They focus on rats because they are genetically similar to humans and have a diverse range of lifespans (寿命). Gorbunova and Seluanov previously discovered that blind mole rats prevent cancer by activating “concerted cell death,” but the approaches at play were a mystery. Now, the researchers believe retrotransposons may be one key piece to the puzzle. Why? Because they discovered that blind mole rats have evolved to retrotransposons to their advantage to kill cancer cells.

At first the researchers believed the approaches behind retrotransposons were unique to blind mole rats. However, they found the same approaches at work in human tissue cells. The researchers still need to figure out exactly how blind mole rats have achieved the balance between activating and controlling retrotransposons. For now, though, they will focus on the power of selfish genetic elements to be, well, not so selfish.

1. What is one of reasons for rats to be chosen as study topic?

A．They are unaffected by cancer.	B．They have overlong lifespans.
C．Their genes are alike to humans.	D．Their retrotransposons are unique.

2. What does the underlined “amok” in paragraph 2 mean?

A．Unbelievably.	B．Unreasonably.
C．Insensitively.	D．Independently.

3. What can we know about the lab’s research?

A．It developed possible treatments for cancer.

B．It transplanted retrotransposons into human.

C．It succeeded in balancing retrotransposons.

D．It removed junk genes from rats effectively.

4. Which is the most suitable title for the text?

A．Blind Mole Rats Fight against Cancer

B．“Junk DNA” is a Double-Edged Sword

C．Blind Mole Rats: Close Friends of Humanity

D．Selfish Genetic Elements Have Great Power

6 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

With hospitals filled up with COVID-19 patients, NASA has announced it will be delaying an upcoming satellite launch. The liquid oxygen     1     (need) to fuel the flight is also needed in hospitals,     2     doctors use the important resource to keep     3     (dangerous) sick COVID-19 patients alive.

“Medical oxygen is     4     priority (优先) of our members,” says Richard Craig, vice president of technical and regulatory affairs for the Compressed Gas Association.

A shortage of truck drivers     5     the certifications needed to transport the oxygen is only adding to the problem, and there are     6     (concern) about other rocket launches being pushed back as well.

At the recently held Space Symposium in Colorado, SpaceX president Gwynne Shotwell     7     (invite) anyone with access to liquid oxygen to reach out. “We certainly are going to make sure the hospitals are going to have the oxygen that they need but for anybody who has liquid oxygen     8     (spare), send me an email,” she said.

SpaceX founder Elon Musk tweeted that the shortage was “a risk,     9     not yet a limiting factor”. So far, 26 rocket launches     10     (plan) by the company.

7 . Cleaning up after an oil spill has always been a costly and time-consuming process that often harms wildlife and further damages the ocean environment. But now researchers at Northwestern University have developed a "smart sponge （海绵）“to clean up oil spills in the ocean.

This new approach is designed to only absorb oil, leaving the clean water behind without affecting ocean wildlife, according to a Northwestern news release. The secret of how the new sponge can selectively absorb only the oil lies in a nanocomposite （纳米复合材料）coating and a carbon-based structure that attracts oil and drives water away. The composite's 3D structure interacts with and sticks the oil, holding it until it is squeezed out.

The best part is that this composite can be used to coat any commercial sponge. All you have to do is apply a thin coating of it to the sponge and let it dry before use. The smart sponge can absorb oil up to 30 times of its own weight. Plus, it is reusable up to a dozen times. The researchers even came up with a plan on the best practices for the smart sponge. The sponge will come in large sheets that are rolled. While there are no limitations in the size, 2-3 feet width will be enough. And the sponge can be used on a beach after an oil spill or airdropped to absorb oil in the ocean.

While getting rid of fossil fuels is the longtime goal, its continued use requires the liquid to be transported long distances and with that comes the risk of oil spills. When these occur, having a safer, more effective method to clean the affected oceans and fragile beach environments will go a long way towards saving our ocean wildlife and coastlines.

1. What's special about the smart sponge?

A．Absorbing water quickly.

B．Helping transport fossil fuels.

C．Storing nanocomposite for a long time.

D．Consisting of oil-attracting structure.

2. What's talked about in paragraph 3?

A．The process of making sponges.

B．The effective way of transporting oil.

C．The plan to reduce oil consumption.

D．The practical application of the smart sponge.

3. What's the author's attitude towards the smart sponge?

A．Supportive.

B．Skeptical.

C．Concerned.

D．Unclear.

4. In which section of a newspaper may this text appear?

A．Entertainment.

B．Lifestyle.

C．Invention.

D．Advertisement.

8 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Detecting strong X-ray flares (耀斑) beaming from the center of a blackhole is nothing new. But detecting light signals from behind one is a different story. That’s     1     the force of gravity in a blackhole is so severe that nothing that goes in can come out. No scientist has managed     2     (find) light from beyond— until now.

In contrast     3     what their name implies, supermassive (特大质量的) blackholes can be one of the brightest sources of continuous light in the universe. Their     4     (extremely) gravity brings in all kinds of material around them. Little is known about supermassive black hole coronas, so scientists turned to blackhole I Zwicky 1,     5     lies 100 million light years from Earth, to investigate the beams shooting out.

Scientists     6     (detect) smaller X-ray “echoes” around the supermassive blackhole, in addition to the expected flares. The obvious light characteristics of these pulsing beams (脉冲光束) indicated that they were the same X-ray flares, but reflected from the backside,     7     (mean) the supermassive black hole’s gravity must have actually abnormal space-time, thus bending the beams around in a detectable direction by specialized telescopes. The     8     (finding), published in Nature, support a key     9     (predict) from Einstein’s theory of general relativity.

This is the     10     (one) research to confirm what the famous physicist predicted more than half a century ago.

10 . At first glance, Huaguoshan kindergarten in Zhuzhou, Hunan province, looks much like any other nursery. But on higher floors, the classrooms are more of traditional Chinese architecture with rice-paper lanterns and a row of black roof tiles. Children wear traditional jackets and large portraits of Confucius hang on the bare walls.

The kindergarten opened in September but already has a year-long waiting list. It taps into a growing nationwide demand for guoxue, or “national studies”. This usually involves learning classical Chinese thought, texts and morals, especially those associated with Confucius. They are taught how to bow, greet each other politely and sit attentively. Also they recite poems, practise calligraphy, perform tea ceremonies and play Chinese chess. But teachers say mastering skills is secondary to building character. A child learns to “respect her rival and accept defeat” in chess and to “value what is fragile” in the tea room.

Frost & Sullivan, a data firm, estimated that the market for children's guoxue education was worth 466bn yuan ($73bn) in 2018, almost double its value in 2014. At the heart of the trend is education. The ancient system of thought stresses respect for authority, ancestors and elders. Confucius taught that such values were essential to achieving individual moral excellence (个人道德). Such citizens would form the basis for social harmony and political stability.

Guoxue content has long been part of the state secondary-school curriculum. The number of classical texts to be taught in schools increased from 14 to 72. In 2017 the government put out guidelines for having a comprehensive guoxue syllabus (大纲) in primary and secondary schools by 2025. The education ministry said state-approved guoxue classes would “enhance a sense of belonging to and pride in the Chinese nation”.

1. How does the guoxue learning in Huaguoshan kindergarten differ?

A．It requires children to behave like ancient Chinese.

B．It follows the growing trend of leaning diverse cultures.

C．It attaches more significance to teaching and training skills.

D．It provides courses associated with classical Chinese culture.

2. What message does Frost&Sullivan's data convey?

A．The heart of guoxue trend is to gain economic profit.

B．Guoxue learning has been a must in secondary schools.

C．Guoxue learning promotes social harmony and stability.

D．The market of children's guoxue learning develops quickly.

3. What can be inferred about guoxue in China from the last paragraph?

A．It helps to build the students' sense of gratitude.

B．Official approval will boost its growth and influence.

C．Classical texts are the only medium in secondary schools.

D．Its content has been taught in primary schools since 2017.

4. What is the text mainly talking about?

A．China's education reform is in progress.

B．Guoxue learning hits Chinese primary schools.

C．A more Confucian education is forming in China.

D．Chinese schools explore ways to spread national culture.