I often dreamed about Pisa when I was a boy. I read about the famous building called the Leaning Tower of Pisa. But when I read the word Pisa, I felt slightly     1     (puzzle). I was thinking of pizza. I thought this tower was a place where people bought pizza. “I am sure it     2     be the best place to buy pizza in the world, isn’t it?” I thought.     3       I could go there by plane was always a question in my mind. It might be a long time later.

Many years later out of     4     (curious) I went to see the Leaning Tower. I knew then that it was Pisa and no pizza. It is     5     (approximate) 54 meters high. But there was still something special about it for me. I stared     6     the tower. It got its name because it really does lean to one side. I have fun with the shape of the tower. Some people say it ought to     7     (fix). Their first     8     (react) is that they are afraid it may fall over and they don’t like it to lean over the city.

I do not think the idea that people should repair it is good. The tower probably will not fall down. It is 600 years old. Why should anything happen to it now?

And, if you ask me, I like     9     it looks like. To me it is a very human kind of leaning. Nothing is perfect, it seems to say. And who cares? Why do people want things to be perfect? Imperfect things may be more interesting. Let's take the tower of Pisa. Why is it so famous? There are many other older, more beautiful towers in Italy. But Pisa tower is the     10    (much) famous. People come from all over the world to see it.

According to a recent survey, violence did exist in schools. Students showed their fear and parents and teachers also     1    (express)their great concern about it. Experts hope the whole society pay more attention to the mental health of adolescents.

Nowadays, school violence is     2     hot issue. I think this is a phenomenon,     3     calls for our great concern. We should try every effort     4    (prevent) violence happening at school for more and more students would drop out of school     5     their personal safety could not be guaranteed. In fact, violence can     6    (learn). Children learn violent behavior from adults or from     7     they see on television or on the Internet.

If I meet with school violence, I will not answer violence     8     violence, for it will result in    9    (much) fighting. I will tell my teachers or parents about it. I think they will help me deal with it well and they will protect me from the bad guys.

All in all, every student should behave     10     (he) and keep away from violence.

Li Jiaqi, a star in live-streaming(网络直播), knows how       1    (draw)the audience's attention. Each time, he introduces a new item,he promotes (推销)it     2     (direct), “Buy it - just buy it! It looks super, super, super good!”

In the month       3    (follow)the shopping festival, Li’s promotion     4    (drive) over one billion yuan in sales on Taobao Live.

As a new way of shopping, live-streaming has proved successful,    5     has led more companies to use online influencers to promote their products . The rise of commercial live-streaming is partly based on convenience. Any product can       6    (buy) during live-streams with just a couple of taps and swipes. Without the advantage,     7     (customer) may give up an item if its description does not provide enough information.

A convincing live-streamer together with limited-time discounts or lucky draws also     8    (account) for its popularity. Those tricks help persuade people to shop through live-streaming.

For now, there is still some doubt     9     live-streamers can really take responsibility for their broadcasts or not. However, buyers are quick to make judgements. “I don’t plan to stop watching Li's live-streams. But out of     10    (curious) , I also do my own research instead of shopping immediately,” said a Mr. Li, who often does shopping online.

Beijing Opera,    1    (know) as China's national opera, also called Peking Opera, which originated in the late 18th century, is a combination of music, dance, art and acrobatics (杂技). It is the most influential and representative of all operas in China. It is called Beijing Opera because it is formed in Beijing. Beijing Opera has    2    history of 200 years and its origin can date back to old local operas, especially Anhui Opera,     3    was very popular in northern China in the 18th century. In 1790, the first Anhui Opera performance    4     (hold) in Beijing to celebrate the Emperor's birthday.

Later, some other Anhui Opera troupes (班子)     5     (continue) performing in Beijing. Anhui Opera was easy    6     (move) and good at absorbing the acting styles of other types of operas. Beijing accumulated many local operas,     7     (make) Anhui Opera improve quickly.

    8    the end of the 19th century and the beginning of the 20th century, after the marriage for 10 years, Beijing Opera finally formed, and became the    9     (big) of all Operas in China. We can    10     (honest) say that Beijing Opera is the most important opera in China.

Albert Einstein was one of     1     greatest scientists in the world. He developed many theories or ideas. These theories contributed greatly    2     people’s understanding of the universe.

Albert Einstein was born in Ulm, Germany, on March 14, 1879. He did not do well in school, but he was     3     (interest) in mathematics and science. While at college, he studied physics and math. After graduation, he worked in a government office. At the same time, he continued studying physics on     4     (he) own.

In 1905 Einstein caused a stir by     5     (publish) five major research papers. One of these papers contained     6     (complete) new ideas about the “properties” of light. Einstein     7     (receive) the Nobel Prize for Physics in 1921, mainly for the work in this paper.

In another paper, Einstein put forward the special theory of relativity,     8     changed how scientists thought about energy and matter.

During World War II Einstein advised the United States     9     (build) nuclear weapons (核武器). He felt that these weapons might     10     (need) to defeat the Nazis. However, after World War II Einstein tried to prevent any future use of atomic weapons.

Einstein died in Princeton, New Jersey, on April 18, 1955.