The twins, who ______ their homework, we...

The chairman remained silent ______ the whole debate.

A.from B.while C.with D.throughout

--- Dad, I have decided not to go to university.

--- ______ What about your future career as a lawyer?

A.It’s up to you. B.Good luck with college!

C.You can’t be serious! D.Are you jumping in with both feet?

阅读下面短文，根据其内容写一篇60词左右的内容概要。

A 15­year­old boy planned to put a ball covered with petrol into his mouth and set it on fire. He would film the dangerous action and put it on YouTube. And, he hoped to become famous on the Internet. But things didn't go the way he imagined. His clothing caught fire, and he was rushed to the hospital with serious burns on his body.

YouTube hosts millions of videos of people attempting dangerous actions. Many of them are by kids and young adults. Some experts say that by hosting these videos, YouTube encourages young viewers to take deadly risks. Research by the Centers for Disease Control and Prevention shows that more than 180，000 Americans die from accidental injuries each year. That's one person every three minutes. More than 14，000 of those killed are kids under the age of 19. Is YouTube to blame?

People have always found it interesting to watch others try risky things. Audiences are mad about these kinds of things. Some of the earliest Greek comedies had characters followed by wild animals and knocking into walls. Now, in the age of the Internet, anyone with a camera and a YouTube account can create this kind of “fun”. Many viewers, especially teenagers, are influenced by what they see and want to try it themselves. “YouTube has taken the playing in the neighborhood to a worldwide level，” says Clair Mellenthin, a researcher from the Centers.

Supporters of YouTube argue that it isn't YouTube's responsibility to examine its content. “Parents should be the ones to make sure that kids are behaving safely，” they say. In fact, YouTube has a rule on content. For example, dangerous activities that have a risk of serious physical harm or death are not allowed. Staff of YouTube, carefully watch the website 24 hours a day, looking for videos that are against their rules. But is this enough?

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假如你是李华，计划寒假去澳大利亚进行研学旅行。 请你用英语给你的澳大利亚笔友Jack写一封信询问一些信息，具体如下：

1．告知研学旅行的目的，期待与Jack面对面的交流

2．当地特色（小吃，节日，习俗等）

3.其他注意事项

注意：1.适当增加细节，以使行文连贯；2.词数80--100词左右

参考词汇：研学旅行study trip

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    Mascots for the 2022 Beijing Winter Olympic and Paralympic Games（残奥会）

A red lantern baby1.(call) “Shuey Rhon Rhon” and2.energetic giant panda named “Bing Dwen Dwen” have been uncovered as the two mascots for the 2022 Beijing Winter Olympic and Paralympic Games. The mascots, known to people on Tuesday night at Beijing's Shougang Ice Hockey Arena, 3. (connect) with the host nation's culture.

Beijing 2022 executive president Chen Jining explained the idea4.(clear) behind the design of the two mascots at the launch ceremony. “The two mascots put elements of traditional Chinese culture together5.a modern international style. They show the Chinese people's eager expectations for the Beijing Winter Olympic and Paralympic Games, and China's warm invitation to friends from all over the world,” said Chen,6. is also the mayor of Beijing.

“They are designed7. (express) all the aspects of the Olympic spirit, including8.(wonder) characteristics such as passion, perseverance, friendship and common understanding to actively engage the public.”

The name“Bing Dwen Dwen”is a combination of several meanings in the Chinese language, with “Bing”the Chinese word for “ice”, and “Dwen Dwen” meaning 9.(strong)and liveliness. In the name “Shuey Rhon Rhon”, “Shuey” is the Chinese word for “snow”and“Rhon Rhon”10.(have) the meaning of tolerance (宽容).