Dogs are often called “man’s best friend” and make ideal pets.     1     most attractive quality of a dog is its faith in its owner. They always greet us when we come home and they will never leave us when we are     2     danger. For example, there was a very sick man and his dog barked and barked until the rescue team     3     (arrive).

Furthermore, dogs are strong animals     4     will protect us. Houses with dogs are considered much     5     (safe) than those with burglar alarms (防盗警报器). Not only will they stop thieves,     6     they will also guard against fire. For example, there was a serious fire and a dog managed     7     (pull) its owner out.

And     8     (final), dogs can be trained by people. Dogs can do a number of things that people can not. For example, they can find drugs, bodies, illegal DVDs and hunt down prisoners with     9     (they) nose. They’re also used to help the elderly and disabled.

To sum up, dogs are really friendly, civilized (文明的) and loyal     10     (partner) .

Xuan paper, known as one of the Four Treasures of Study, first came into     1     (exist) in Xuan Prefecture in the Tang dynasty. The traditional skill of making the paper     2     hand has been passed down through generations. The process takes as many as 108 steps, all of     3     require a level of delicacy.

Take papermaking master Zhou Donghong for example. He uses a fine screen to filter (过滤) a mixture of water and fibers. He lifts it up, and it’s a sheet of paper. It takes him and his partner only 15 seconds     4     (form) and shape it, but they’ve devoted     5     (they) to perfecting the skills for decades.

“There are a lot of tricks of filtering the fibers, and timing is the most difficult part of all. We have only one chance to filter the right amount of fibers , and only the proper weight guarantees the paper is neither too thin     6     too thick, and the margin (差额) for error is     7     (extreme) small,” said Zhou. With just the right degree of thickness, top quality Xuan paper holds ink and tightly.

The skill of papermaking,     8     (recognize) as a national treasure, has also proven to be an international one. We felt     9     great sense of pride as it was listed as a world intangible culture heritage (非物质文化遗产) by UNESCO in 2009. Since then, in Jingxian County, Xuan papermaking     10     (teach) in schools.

The Internet has become part of young people’s life. A report     1     (show) that 38% of students often use the Internet. Most of them get     2     (use) information on the Internet     3     use the Internet to help in their studies. But many students don’t use it     4     a good way. Some play games too much, and some visit websites     5     shouldn’t look at. So bad things may happen if students spend too much time on the Internet.

It is important for students to use the Internet     6     (proper). Now we have a textbook that uses many examples    7     (teach) students some good ways to use the Internet. It gives them useful     8     (advise).

Some students also make friends on the Internet. But if you want to have     9     face-to-face meeting with your online friends, let your parents     10     (know) and meet in a proper place.

Danny has a hobby—playing games online. He is interested     1     solving puzzles. He particularly enjoys chatting to other gamers.

Now Danny     2     (sit) quietly in front of his computer. His mother thinks he is doing his homework,     3     she is wrong. Danny is actually surfing the Internet, solving puzzles and “chatting” to other gamers     4     come from around the world. How funny it is! Danny thinks.

Why are game online so interesting? “    5     I can pretend to be a different person. There also many different     6     (kind) of games for me to play.” says Danny. “Other people love to play these games because they can play at any time. They do not need to organize a group. Someone in the world always wants     7     (play).”

Starting a game online is not easy. Some gamers don’t welcome new gamers. They will become     8     (anger) when new gamers ask them questions. Other gamers are helpful. They want to make new friends. When Danny has     9     question, he always says, “Excuse me, are you busy? I am new at this game and I need some help.” Sometimes this     10    (work). At other times, however, the gamer at the other end makes you feel like fool.

Table tennis started as an after-dinner game, but is now a fast, high-tech sport. It also has     1     most players of any sport in the world.

    2     is believed that upper-class Victorians in England invented table tennis in the 1880s as an after-dinner alternative (可能的选择) to tennis,     3     (use) whatever they could find as equipment. A line of books would often be the net, and sometimes a cigarette box cover would be a racket.

In 1926, at a meeting     4     (hold) in Berlin, the International Table Tennis Federation was formed. The first World Championships were held in London in the same year, but the sport had to wait a long time before it was given a chance     5     (make) its first appearance at the 1988 Seoul Olympic Games.

The sport     6     (progress) greatly since it was first invented. Nowadays, players use     7     (special) developed rackets and a lightweight, hollow (空心的) ball. Thanks to their high-tech rackets, they can now enjoy the     8     (magic) feeling of hitting the ball at over 150 kilometres per hour!

Over the years, table tennis has developed into a worldwide sport. There are perhaps 40 million competitive table tennis players and countless millions     9     play less seriously. Hopefully, table tennis     10     (play) by more people all over the world in the future.

There are thousands of endangered species in the world. If the rate    1    which they are dying out continues to rise, millions of plants and animals will become extinct    2    (immediate) in the next decade. The Giant Panda,    3    (know) as a symbol of conservation, might be one of them. Apart from the few pandas    4    (live) in zoos and conservation centres around the world, pandas     5    (find) only in the bamboo forest in southwest China. They are endangered as their habitats are being destroyed due to human    6    (activity). Because of conservation efforts,    7    number of pandas is increasing according to a recent survey. The news is exciting, but much still has to be done to save it from    8    (extinct). The Yangtze Dolphin is another species    9    habitat is being threatened. We must take measures to protect the Yangtze River. We should learn to exist in harmony with    10    (vary) types of wildlife.

With schools shut down and the ways of daily life     1    (change), children are hearing more about COVID-19. They may not fully understand it, or know how     2    (serious) to take it, but at present their lives     3     (affect). Many parents are trying to decide how to talk with their children about the virus and the outbreak. Some say they are checking in each day     4    (see) how their children are doing.     5     others worry that talking too much about it could make their children     6    (much) nervous and fearful than before.

Nicole Poponi is the mother of 10-year-old Clara, and 12-year-old Jane,     7     said, “We talk about it a lot. I watch the news every morning, and they’re always watching it, too.” Child psychology experts advise parents and others to be calm and positive when discussing the issue with young people. They suggest centering discussions     8     active steps one can take. They also suggest doing research in order to answer children’s questions truthfully. Parents should explain that     9    (measure) such as wearing covers over your mouth and nose and closing schools are preventative and temporary, Dr. Howard said. She urges parents to follow what the television personality Mister Rogers used to say: look to the “    10    (help)”—to see what doctors, teachers, parents and scientists are doing to keep them safe.