March 12th is Tree Planting Day in China. Trees are important to the earth. You can help to improve the environment and make the world a better place by planting trees. If you want to plant a tree, here are some simple     1     for you to follow.

Step 1: Choose the Right Kind

You need to choose the right kind of trees     2     you plant a tree. Some kinds live better in cool or cold places, while others live better in warm or hot places.

Step 2: Choose the Proper Place

Once you have your tree, find a proper place for planting. Look for an area that gets plenty of sunlight and enough space for the tree to grow. What's more, the ground should be neither too wet nor too     3    . Avoid planting your tree too close to buildings because when the tree     4    , it may influence the building nearby and its roots (根) may also cause trouble.

Step 3: Plant the Tree

Dig a hole that is just a little wider than the root ball of the tree. Pick up rocks from the soil (土壤) because they may     5     the roots. Now it's time to plant your tree. Carefully place the tree in the hole, and fill     6     with some soil. Make sure to press the soil down. Don't forget to tie a stick to the tree. In this way, the tree will stand     7    , not leaning (倾斜) to one side. After finishing the above steps, remember to water the tree well.

Step 4: Care for the Tree

Continue to water the tree once a week during the first year after planting. Then the tree will get used to the new environment sooner. Cut     8     some old branches so that the tree will grow better the next year.

In a word, planting trees is important to the health of our planet, and it's something that everyone can do.

About 75 percent of the city’s factories and buildings, 90 percent of its homes, and all of its hospitals were gone.     1     covered the ground like red autumn     2    .

Could machines really develop human-like intelligence? And what would happen if they did? Would thinking machines work alongside humans or     1     the existence of humans? How would they be punished if they     2     crimes or even murdered humans? As we become more and more     3     on computers, some scientists are urging us to think about the dangers     4    by the advances in AI. Stephen Hawking, for example, warned, “The development of full artificial intelligence could     5    the end of the human race.

The French author Jean Anthelme Brillat-Savarin once     1    , “Tell me what you eat, and I will tell you what you are.” Put more     2    , this means “You are     3     you eat.” Most people today     4     this saying to healthy eating. However, Brillat-Savarin was actually referring     5     our personality, character, and culture.

Dyson has become a byword (代名词) for high-performing products, technology, design, and invention. James Dyson, the inventor and entrepreneur who made it all happen, tells his remarkable and inspirational story in Invention: A Life.

Over a four-year period, James Dyson made 5,127 prototypes of the dual cyclonic vacuum cleaner (双气旋真空吸尘器) that would transform the way houses are cleaned around the world. In d    1     all his resources to developing the technology, he risked it all, but out of many failures and       2     (巨大的) efforts came success. His products — including vacuum cleaners, hairdryers and fans — are not only revolutionary technologies, but design classics.

This was an outcome of his time studying at the Royal College of Art in the 1960s, when he was inspired by some of the most famous and     3     (influence) artists, designers, and inventors of the era.

In Invention: A Life, Dyson reveals how he came to set up his own company and led it to become one of the most     4     (杰出的) technology companies in the world. Dyson has always looked to the future, even setting up his own university to help provide the next generation of engineers and designers, for, as he says, “Everything changes all the time, so experience is of little use.”

Whether you are someone who has an idea for a better product or a(n)     5    (ambition) entrepreneur, whether you appreciate great design or just need a page-turning read, Invention: A Life offers you inspiration, hope, and much more.

Arianna Huffington has been very vocal (直言的) about the importance of sleep since accidentally overworking herself to the point of exhaustion (筋疲力尽) in 2007.

Critics might point out that she managed to establish a(n)     1     (公认的) successful media company, the Huffington Post, after years of losing sleep. But Huffington said that was not the case.

Contrary to popular belief, she told CNBC Make It that she truly became successful when she quit working round-the-clock.

“Huffington Post was only a two-year-old baby when I       2     (突然倒下),” said Huffington.

After coming to realise the importance of sleep, Huffington started to see a difference in her work       3     (方式) and that’s when her business began to grow.

“I can tell you with authority that when I’m exhausted, I’m the worst version of myself,” said the entrepreneur (企业家). “I’m more reactive. I’m less creative. And all of us can testify to that.”

“I’m not c    4     you that people can’t succeed by burning out. But they can succeed much more effectively, and much more sustainably, and with much less damage to their health and their relationships,” said Huffington.

In January, eight gorillas (大猩猩) at the San Diego Zoo Safari Park, in California, became the first great apes to test positive (阳性的) for COVID-19. “There was an immediate concern,” said Nadine Lamberski, the chief     1     (保护) and wildlife health officer at the San Diego Zoo Wildlife Alliance. “We want to     2     (尽我们的职责) and take all measures to make sure that won’t happen again.”

So Lamberski made a decision. In February, she gave nine other great apes an experimental COVID-19 vaccine. Those nine became the first zoo animals in the United States to get the vaccine. Since then, the vaccine has been shipped out to zoo animals in 27 states. Lamberski got the COVID-19 vaccine from Zoetis, a company that makes medications for animals. Now the company reports that its vaccine is safe for other animals, too. It’s     3     (incredible) wonderful news for animals and those who care about them.

So far, Zoetis has donated its vaccine to nearly 70 zoos in the U.S. According to Lamberski, zoos are requesting the vaccine because their animals     4     (受到……的威胁) getting the virus from visitors and caretakers. “Animals in zoos are exposed to hundreds, if not thousands, of people a day,” Lamberski said.

With the    1    (发展) of economy, people are    2    (遭受) more and more     3    (自然的) disasters. Due to the strongest typhoon called “Dussuri”, there was a heavy rain in many areas and it caused great losses,    4    (尤其) in the north China. The roads were    5    (覆盖) with water and thousands of houses were     6     (破坏). In case of disasters, we are supposed to keep    7    (镇静的) and try to escape in time.

The bad weather may have something to do with the worsening of environment. People may think that big things must be done to protect the environment. Many forget protecting it begins with small things. For example, it’s a good idea to use reusable bags instead of     8    (塑料的) bags. You can also save electricity by turning off lights before leaving a room. Never use    9    (木制的) chopsticks when you buy takeaway food. All these small things can add up and make a big     10    (差异).

One night a hotel caught a fire, and people in it ran out in their night clothes.

    1    (幸运地), nobody was hurt.

Two men stood o    2     and looked at the fire.

“Before I came out,” said one,“I ran into some of the rooms and found a lot of money. People don’t think of money when they’re     3    (害怕的). When anyone leaves paper money in a fire, the fire burns it. So I took all the bills that I could find. No one will be poor because I took them.”

“You don’t know my work,” said the other.

“What is your work?”

“I’m a policeman.”

“Oh!” cried the first man. He     4    (思考) quickly and said,“And do you know my work?“ “No,” said the policeman.

“I’m a writer. I’m always telling s    5     about things that never happened.”

Another important factor to consider is the tremendous pressure that     1     with studying abroad. Students must learn how to live in an unfamiliar environment with limited language skills. Some may struggle and     2     from culture shock when learning how to behave in new     3    . Other students are not     4     enough to handle the challenges by themselves and may become depressed. Some students might even encounter problems with personal safety. In addition, different     5     to teaching and learning may come as a shock to many students.