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题型:阅读理解-单选 难度:0.65 引用次数:107 题号:15167033

Do you know your phone number well? Your number has 11 digits (数字). You may sometimes find it hard to remember your number. That is because China has the longest mobile phone numbers in the world. Why is that?


       The 11 digits include three parts. Each part has a different meaning. The first three numbers tell you the mobile phone service provider you are using. For example, 135 is for the China Mobile Communication Corporation (中国移动) and 188 is for China Unicom (中国联通). The fourth to the seventh digits tell you where the number is from. And the last four digits are random (随机的).
       The main reason for using 11 digits is that we have the largest population in the world. We once had 10 numbers. But as our population grew, there were not enough numbers for us to use. So we began to use 11 digits from 1999.
       Eleven digits can make tens of billions of mobile phone numbers. That’s enough for each person to have seven or eight phone numbers to use in China. Also, we can use the mobile phone numbers again. Usually, the service provider will use a canceled number again after three to six months. If you call a number that you haven’t called for a long time, you may find its owner has changed.
       Besides China, Britain and Japan also use 11-digit mobile phone numbers. But their numbers always start with 0. So they cannot make as many numbers as we can. Countries like the United States, Australia and India use phone numbers with 10 digits. Canada’s mobile phone numbers are perhaps the world’s shortest: they use seven digits.
1. What can we learn from the mobile phone number 188-4792--8343? ________
A.The service provider is the China Mobile Communication Corporation.
B.The digits 4792 tell you the area the mobile phone number is from.
C.There are ten digits in the mobile phone number.
D.The digits 8343 tell you the number of service providers in China.
2. Why do we use 11-digit mobile phone numbers in China? ________
A.There are many people in China.
B.People in China can remember numbers well.
C.11 is a lucky number for Chinese people.
D.It helps people to remember more phone numbers.
3. What does the underlined word “canceled” mean in Chinese? ________
A.新型的B.已撤销的C.有用的D.特殊的
4. ________ can make the most mobile phone numbers.
A.10 digits starting with 1
B.11 digits starting with 0
C.11 digits starting with 1
D.10 digits starting with 0

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【推荐1】You probably know many of the things that you can do with the hundreds of different muscles in your body. But have you ever thought about how the muscles in an animal's body are different from yours? An animal's muscles are made to do the things that are most important for its life.

Lions are hunters. They depend on their ability to catch other animals. Lions must be fast in order to catch their prey(猎物). The powerful muscles in their back legs allow them to run at the speed of more than 30 miles per hour. They can also jump a distance of more than 35 feet. The strong muscles in their front legs help them catch their prey.

Snakes also use their muscles for hunting prey and for movement, but their muscles work in very different ways than lion's do. Because snakes do not have any legs, they use their muscles to push against the ground or other objects to move themselves forward. Their muscles also allow them to eat things that seem much too large. For example, a snake may eat an egg that is larger than the width of its body. How does this happen? The snake's strong neck muscles work together to push the egg down the mouth.

The elephant's long nose has a lot of muscles. Scientists believe that the nose alone has more than 100000 muscles! This is because the elephant uses its nose much in the same way that people use their hands and fingers. Even though the nose is large, it can perform surprisingly tasks. For example, an elephant can pick up a small leaf from the ground. The nose can also be a powerful tool. An elephant can use its nose to pick up a tree by its roots or even to lift a baby elephant.

The great muscles of these animals seem pretty unbelievable. But the muscles in your body work exactly the way you need them to. After all, it might be fun to be able to jump a distance of 30 feet, but as a human being, there is just not much need of it.

1. The underlined word "hunter" in Paragraph 2 means persons or animals that ________.
A.keep animals for funB.raise animals for meat
C.catch animals for foodD.run after animals for exercise
2. All the followings are talked about in the passage EXCEPT ________.
A.An elephant's nose is strong enough to pick up a tree by its roots
B.The strong muscles in the back legs help lions catch their prey
C.Snakes can't move themselves forward without their muscles
D.Muscles in an animal’s body are not the same as a human’s
3. According to the passage, what makes the muscles in your body different from an animal's?
A.The exercise.B.Your work.C.The environment.D.Your needs.
4. Which of the following shows the structure of the passage?
A.B.C.D.
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【推荐2】CHOKING FIRST AID

Life is full of the unexpected. Choking (噎住) on food can be dangerous sometimes. The Heimlich maneuver (海姆立克急救法) is a very useful way to save a person who is choking. And it’s easy to learn.


1. Stand behind the person. Put your arms around his waist (腰).

2. Make a fist (拳) with one hand. Put it a little higher than his navel (肚脐).

3. Hold the fist with the other hand. Pull the fist inward and upward quickly.

4. Repeat the above steps until the food goes out.


Please remember:

1. Call 120 first before performing the Heimlich maneuver.

2. The Heimlich maneuver can be performed on adults and children over 1 year old, but it is not suggested for babies under 1 year old.

3. Do not perform the Heimlich maneuver when a person is able to speak, cough or breathe.


What should you do when a baby under 1 year old is choking?

1. Hold his face down. Make sure his head is lower than his body.

2. Use the heel of your hand to do back thumps (背部拍击) 5 times.

3. If that is not helpful, turn his face up,with the head lower than the body.

4. Use two fingers to do chest thusts (胸部按压) 5 times.

5. Repeat the above steps until the food goes out.

1. Where should you stand when performing the Heimlich maneuver to save a student?
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【推荐3】The weather’s getting cooler; the trees are turning brown—it’s autumn!

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2023-11-10更新 | 50次组卷
共计 平均难度:一般