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题型:阅读选择 题类:模拟题 难易度:普通

广西北部湾经济区2021年初中学业水平考试英语模拟卷一

阅读理解

Your brain controls everything you do. It makes it possible for you to think, learn, create and feel; to blink (眨眼) and breathe and for your heart to beat--this fantastic control center is your brain. It is so amazing that a famous scientist once called it" the most complex(复杂) thing we have yet discovered in our universe".

Can this small grey organ(器官), which weighs less than one and a half kilos, really do so much? Amazingly , your brain contains(包含) about 100 billion neurons(神经元)-it would take you, over3, 000 years to count them al. Believe it or not, the activity in your brain never stops. Your neurons create and send more messages than all the phones in the world. And although one neuron creates only a little electricity, all your neurons together can produce enough electricity to power a light bulb.

So exactly how fast does your brain work? Well, imagine this: a bee lands on your foot. Neurons in your skin send this information to your brain at a speed of more than 240 kilometers per hour. Your brain then uses other neurons to send the message back to your foot to shake the bee off quickly. These neurons can send this information at more than 320 kilometers per hour. No computers have your brain's unbelievable ability to deal with the amount of information coming from your eyes, ears and other sensory organs.

But how does your brain allow you to learn things that you will use in the future? The structure(结构) of your brain changes every time you have a new thought,remember or learn something. For example, riding a bike seems impossible at first, but soon you are able to do it. How? As you practice, 'your brain sends" bike riding" messages again and again soon, the actions are learnt and you are able to ride a bike easily from then on.

(1)、From the passage we know that neurons(神经元) ________.
A、can create and send less messages than a phone B、are only found in your skin C、send messages to your brain D、need electricity to work
(2)、In Paragraph 3, the writer mentions computers to ________.
A、show how fast they have become B、say that computers have no use C、ask people to use computers D、compare them with the human brain
(3)、According to the passage, when you have a new thought, ________.
A、your brain will power a light bulb B、your heart beats faster C、the structure of your brain changes D、the activity in your brain stops
(4)、According to the passage, which of the following is NOT TRUE?
A、Your brain contains about 100 billion neurons. B、These neurons can send this information at over 320 kilometers per hour. C、Your brain controls everything you do. D、Human brain weighs more than 3 kilos.
(5)、What's the best title of the passage?
A、Amazing Brain B、Complex Organ C、The Importance of Neuron D、The Structure of Your Brain
举一反三
 根据短文和图表内容,选择最佳答案。

The temperature has dropped to 30 degrees below zero. But that doesn't stop the fishermen of Songyuan City in Jilin Province. Each morning, they get up early and rush to Chagan Lake with a group of horses. The fishermen use the horses to help pull fishing nets out of the frozen (结冰的) lake.

For centuries, those living around Chagan Lake have kept alive the tradition of ice fishing. They dig holes through the thick ice and use a huge net to catch winter fish in the freezing water. This special method has been listed as an intangible cultural heritage (非物质文化遗产).

Every year in December, there is a winter fishing festival, which marks the beginning of the winter fishing season. Over 20 activities are held during the festival, such as winter sports competitions, nature watching, and the selling of the first-caught fish.

None of the tourists at this year's festival would ever imagine that Chagan Lake used to be only tens of square kilometers in size. In the past, there was little rainfall and the lake grew smaller over time. Also, overfishing is one of the main reasons.

To bring Chagan Lake's beauty back, the government used a lot of different methods. They brought in water from the Songhua River, grew more plants, and kept the water clean. The lake now covers about 500 square kilometers, and fish numbers have returned to a normal level. Now, an increasing number of tourists flock to the lake each year to experience the ancient ice-fishing tradition.

The special event of ice fishing at Chagan Lake is sure to continue into the future. It's a hit with tourists, and the locals say that the life of Chagan Lake will only get better and better.

 阅读短文, 从每小题所给的四个选项中, 选出能回答所提问题或完成所给句子的最佳答案。

Recently, researchers have found that dolphins know their own names much like people. Dolphins talk to one another with whistles (口哨) and calls. Scientists have known that the animals also use unusual whistles to name each other. They had thought that dolphins only heard each other's voices. However, the scientists didn't know that dolphins listen for their names too.

To test this idea, the researchers caught 14 dolphins and recorded their name calls. The scientists then copied each dolphin's voice. When the changed recordings were played, the dolphins replied strongly to the names of their relatives and group members. They paid no attention to the names of dolphins they did not know.

Dolphins live in large groups that grow and change. Each dolphin's unusual whistle helps it quickly find a friend or a family member, or call for help. Understanding their calls requires learning. It's a skill that's seen in very few animals, which include humans and elephants.

Elephants, for example, communicate with sound. Their sounds can be heard by other elephants miles away. Dolphins, too, communicate with each other by making sounds like this. Elephants also communicate by moving their head, feet and trunk (象鼻). In much the same way, dolphins communicate by their movements. They often touch each other to express friendship.

Unlike dolphins, elephants also communicate by their great sense of smell. They can recognize other elephants by the smells they have.

Why do dolphins and elephants share the gift of communication? Scientists think it may be because they are social and smart animals. Both have strong family relationship. Now, whether they also have nicknames(绰号) is another question!

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