Where does the conversation probably take place?
A.At a restaurant. B.At a hotel. C.In a shop.
What does the man want to do?
A.Walk to the next stop. B.Wait for the next bus. C.Stay on the bus.
How much will the man pay?
A.$50. B.$40. C.$20.
What does the woman think of golf?
A.It's fun. B.It's silly. C.It's exciting.
假定你是李华，你校英语俱乐部将就 “How to keep healthy” 这一话题进行讨论。请你用英语写一篇发言稿，谈谈健康的重要性，并从饮食、运动、睡眠等方面就应该如何保持健康给出自己的建议。
注意：（1）词数不少于100；
（2）发言稿的开头和结尾已给出，但不计入总词数；
（3）可适当补充细节，使内容充实，行文连贯。
Good morning, everyone!
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That’s all. Thank you!
阅读下面短文，按照要求完成阅读任务。
Why would human beings waste a third of their lives sleeping when they could be doing more important things like looking after their families or working? Some scientists believe sleeping helps recharge the body, while others think it is important for strengthening newly-formed memories. Now, there is new evidence which suggests that the purpose of sleep may be to forget some of the millions of new things we learn each day.
The neurons in the human brain consist of fibers called dendrites(树突). These grow as we learn new things and connect the brain’s cells to each other at contact points called synapses(突触). The larger the dendrites become and the more cells they connect, the more information we store.
In 2018, Giulio Tononi and Chiara Cirelli, both biologists at the University of Wisconsin-Madison, suggested a new idea: The things our brains learn each day result in so many synapses that things start to get a little messy. Sleeping allows us to sort through(整理) the “noise” and dispense all the unnecessary information, leaving behind only the most important memories.
Recently, the university’s research has provided direct evidence to support the theory. The experiment involved analyzing 6,920 synapses in the brain shavings from two groups of mice over a four-year period; one group had been allowed to sleep, while the other had been kept awake and entertained with toys. The researchers discovered that the brain shavings of the sleeping mice had nearly 20 percent fewer synapses than those that had been kept awake and entertained.
It was also evident during the study that the brain does not shave every synapse. 20% of neurons remained unchanged; these were most likely well-established memories. Therefore, although we may be sleeping to forget some of what we’ve learned, the brain “forgets”in a smart way.
Most researchers believe clearing our brains is not the only purpose of sleep. Resting our minds and bodies has also been found to help with other biological functions like strengthening our immunity. Though scientists may never agree on a single reason, they are all sure of one thing－a good night’s rest is essential for our health. So try and spend at least a third of your day sleeping!
1.What’s the new discovery about the purpose of sleeping according to the text?(no more than 15 words)
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2.What’s the main idea of Paragraph 2?(no more than 10 words)
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3.What does the underlined word “dispense” in Paragraph 3 probably mean?(no more than 5 words)
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4.What agreement do all the scientists probably reach about sleeping according to the text? (no more than 10 words)
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5.What kind of sleeping habit do you have? Please explain.(no more than 25 words)
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