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题型:阅读选择 题类:模拟题 难易度:普通

浙江省杭州市2020年九年级英语中考模拟试卷(四)

阅读理解

    Have you ever had trouble sleeping in a new place?

    Lots of people do. And now researchers from Brown University in Rhode Island think they know why. They found that one-half of the brain "remains more awake" than the other half when people are trying to sleep in a new place.

    The sleep findings were reported in Current Biology by Brown University. In their report, the researchers said many people report they have a harder time sleeping the first nightat a hotel or other places outside their home. They call it "first-night influence". "In Japan they say, 'If you change your bed, you can't sleep,'" said Yuka Sasaki, one of the report's writers. "You don't sleep very well in a new place. We all know about it."

    The researchers measured brain waves (测量脑波) for 35 volunteers over two nights in a laboratory. The two nights were a week apart (间隔). They found during the first night the left half of the brain was more active than the right half. This was during the first deep-sleep period, the researchers said.

    Sasaki said a lot of questions remain.

    Researchers did not keep measuring brain waves all night long. So, they don't know if the left half keeps "watch" all night, or whether it "works in shifts (轮换) with the right half later in the night". They also do not know why the brain activity, at least during the first period of deep sleep, is always on the left half.

    For some, this research may be calming. It is good to know that our brain is "looking out for us" in a new place. But it may not help with sleep. That brain activity, at least according to this new research, makes it harder to get the sleep people need to wake up well rested in the morning.

(1)、The researchers found           during the first deep-sleep period.
A、the brain waves remained the same B、the brain activity helped with sleep C、the right half of the brain kept "watch" D、the left half of the brain was more active
(2)、Which of the following is one of the questions that remain?
A、Whether the new bed keeps you from sleeping. B、How you have trouble sleeping in a new place. C、Why the brain activity is always on the left half. D、What people can do when they can't sleep well.
(3)、The underlined word "calming" has the closest meaning to"           ".
A、pleasing B、different C、serious D、strange
(4)、What is the text mainly about?
A、What we will have to do to sleep well. B、How researchers measure brain waves. C、Who doesn't sleep well in a new place. D、Why it's harder to sleep in a new place.
举一反三
 阅读理解

This was an English park. Was this an English summer? I was shaking with cold! It didn't seem warm enough. Perhaps I should explain. I'm from Brisbane in Australia. But today I was visiting my family in England. And they were taking me out to enjoy London.

"What a fine, bright day!" my Aunt Jess said happily. I nodded and smiled politely. In England it's not polite to disagree, especially about the weather. But inside I was thinking: It looks awful. Brisbane's winter is warmer than England's summer!

It was sunny at first. But, as our picnic went on, it turned darker. Storm clouds suddenly covered the sky. British people often describe their weather as "four seasons in one day". But for me, one season was missing from that day: summer!

Aunt Jess said," When I was young, the summers were much longer and sunnier. I don't remember a single bad summer's day in the 60 seconds!" Weather records show that she was wrong. But again I did not disagree. My cousin Jane said, "Maybe we will have a white Christmas this year." That would be wonderful , but I doubted (怀疑) it. After all, it has only snowed at Christmas five times in the last fifty years.

Suddenly it turned windy. A heavy rain began to fall. We ran to hide from the rain. But my "summer" dress still got very wet. As I watched the rain beating down, I began to daydream. I dreamed about long, hot summer days in Brisbane.

"Well," said Aunt Jess, "We had a few good hours. And at least, the weather gives us something to talk about…"I smiled politely once more, but had a secret thought. Yes, let's talk about my English relatives moving to Australia!

 阅读下列短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。

A new AI system can be used to make predictions(预测) on the crop yields(产量) up to six months before harvest. The tool counts flowers on fruit trees, which can help farmers improve crop yields and make better use of water and labor, and to plan harvests.

The system, developed by researchers at the National Robotarium in Edinburgh, can count flowers on fruit trees from photos taken by a smartphone. It works by knowing features, such as the edges and shapes of flowers. In Spain, studies on peach trees showed the system to be 90% correct in flower counts, which is much better than the 30% to 50% mistakes made by humans, according to researchers.

 "In countries all across the world, farmers often depend on traditional methods to predict their yields, which can lead to big mistakes, " said Fernando Auat Cheein, a professor at the National Robotarium. "The flower-counting AI makes it possible to help farmers make wise decisions about crop management. "

"By paying more attention to the areas of the farm that are expected to produce the most fruit, farmers can make the most of resources(资源), reduce their environmental effect, and improve the harvest, " said Mr Cheein. "Our AI tool can be used with traditional farming practices, making it easier for growers to get help without completely changing their present methods. " The researchers will next compare the AI's predictions with the actual peach harvest in the following months. If these turn out to be effective (有效的), they believe the method could be used for crops such as apples, pears, and cherries, helping fruit growers in Britain, Europe, and other areas.

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