A person has been badly injured in a car accident. It is necessary to give him a transfusion (输血) because ...

题型：阅读选择题类：模拟题难易度：普通

    A person has been badly injured in a car accident. It is necessary to give him a transfusion (输血) because he has lost much blood in the accident. However, special care must be taken in selecting new blood for him. If the blood is too different from his own, the transfusion can kill him.
    There are four basic blood groups: A, B, AB and O. A single test can tell us a person's blood group. Everybody is born with one of these four blood groups. People's blood group, like hair colour, is inherited (继承) from parents.
    Because the substances contained in each group are different, transfusion must be given carefully. Basically, A and B cannot be mixed. A and B cannot receive AB, but AB may receive A or B. O can be given to any other group, so it is often called the universal donor. On the contrary, AB is sometimes called the universal recipient (接受者). However, before being given the transfusion, patients usually receive only salt or plasma (血浆) until their blood can be matched as exactly as possible. In this way, it is possible to avoid any bad results of the transfusion.
    There is a relationship between our blood groups and our nationalities. Among the Europeans, about 42 percent are blood group A while 45 percent are blood group O. The rarest is blood group AB. However, some American Indian groups are nearly 100 percent blood group O.

（1）、Which of the following shows the correct relationship in blood transfusion? (→ =" giving" blood to)

A、

B、

C、

D、

（2）、Usually, before being given a transfusion, ________.

A、a person needs to receive salt or plasma first B、a person needs to have a good rest C、a person needs to have a lot of food and water D、a person needs to find the person with the same blood group as him

（3）、The third most common blood type among the Europeans is _______.

A、A B、B C、AB D、O

（4）、Which is NOT right according to the passage?

A、A person's blood group depends on his parents. B、There is only one kind of blood group in a person's body. C、About 13 percent of the Europeans have blood group AB. D、Most of American Indians can be universal blood donors.

（5）、Which is the best title for the passage?

A、Blood transfusion B、Blood groups C、Car accidents D、Blood group and nationalities

举一反三

    Many companies use guards and expensive alarm systems to protect their property(财产). Soon a new kind of protection will be used- robots. Engineers have been working on the first mobile robots for businesses. The robots will patrol(巡逻) factories, warehoues(仓库)，and museums at night.
    The mobile robots will move around slowly on wheels. They will be able to detect people through walls and pick up sounds, such as breaking glass. They can be fixed with lound sirens(警笛) to frighten thieves, or radios to signal police or guards.
    To protect a building, a robot will have to move around without knocking into the walls. Information about the building will have to be stored in the robot's small, built-in computer. A floor map could be programmed into the computer's memory, for example.
    A mobile robot will not be able to do everything. Unlike human guards, it will not be able to climb stairs, open doors, or move along rough ground. It won't be able to tell the difference between friends and enemies. Because of that, people will have to be barred from the area it patrols.
    One kind of mobile robot will be able to “sense” whether a chair or box has been moved and go around it. This robot will also judge size well enough so that it won't send an alam if a cat crosses the room. And if someone tries to steal this robot, it will sound a loud, painful siren. The three-foot-tall robot will be hard to steal anyway. It will weigh about 200 pounds.
    U.S companies pay almost $10 billion a year to protect their property with alarm systems and human guards. Mobile robots may be cheaper.

Right in the middle of the town are some long ponds(水池). They are only about half a foot deep. The men of Symi dug out the earth to make the ponds.
Over each pond is a low cover. It is made of glass that you can see through.
At night, sea water is taken into the ponds. The next day, the hot sun shines through the covers. The sun light turns the water into vapor(水蒸气) and the vapor goes up from the ponds. The salt is left behind.
As it goes, the vapor became mist. On the inside of each cover, the little drops of mist run together to make big drops. These drops run down the sides of the cover, filling other ponds with fresh water.
The salt left in the ponds is washed out each night. Then more sea water is taken in. The factory is ready for the next day's work. The covers and other parts of the factory cost very little. Sea water and sun cost nothing. Most people of Symi are poor. So to them this new way of getting fresh water seems wonderful.

根据短文内容的理解，选择正确答案。

For many years, scientists have said that the earth is getting warmer. Now they have found something new—hot cities! In the southern US, they have found that cities become very hot in summer. For example, the city of Atlanta in Georgia has roof(屋顶) temperature of up to 50^oC while it is 27℃ in the streets! At night, the outside of buildings stays so hot that the heat of the city causes storms over the city!

China also has the same kind of problems. Every year more farmland is used for factories or offices. More housing is needed, too. As people become richer, they buy more cars. New roads are needed and new car parks are built in the city centers. This all makes cities hotter.

It isn't easy to change the situation. City planners say that we should plant more trees in the middle of cities. Every new street should have trees on both sides, they say. Trees make the temperature lower, so we should have more trees in our parks and squares. We should also paint our roofs white. If we do this, they do not become so hot. Every roof in a hot and sunny country should have solar(太阳的) roof panels. The electricity from these can be used to run the air conditioners (空调)in the buildings.

People continue to cut down forests around the cities. This makes the problem worse. Cities are growing faster and faster. By the year 2025, four fifths(五分之四) of the population will be living in cities. If we go on like this, there will not be enough farmland to feed everyone in the world.

Read the passage and finish the exercises.

I'm Jason from China. Here is my neighborhood. There's a new library

near my house. I often borrow some books there. Across from the library is a school. It's my school. Next to the school, there is a supermarket. My parents like shopping there.

I am Diana from Australia. In my neighborhood there are so many small shops and restaurants. That's why my neighborhood is always busy and noisy.

On the street corner, you can find my house. A hospital is near it. And across from the hospital is a park. My best friend Jane and I always have fun there.

I am Daisy from America. In my neighborhood there's a big shopping mall.

Every day lots of people go shopping there. During the weekend I like to spend time there, too. There is a hotel across from the mall. A bank is next to the hotel. And some clothes stores are near the bank.

阅读理解

Many children use the Internet to get useful knowledge(知识) and information, and to relax in their free time. But some of them are not using it in a good way. Here are some rules to make sure you are safe and have fun on the Internet.

Make rules for Internet use with your parents. For example, when you can go online, for how long and what activities you can go online.

Don't give your password(密码) to anyone else, and never leak out the following information — your real name, home address, age, phone number or other personal information. Check with your parents before giving out a credit card(信用卡) number. Never send a photo of yourself to someone in email unless your parents say it's OK.

Check with your parents before going into a chat room. Different chat rooms have different rules and attract(吸引) different kinds of people. You and your parents must make sure it's a right place for you. Never agree to meet someone you met on the Internet without your parent's permission(允许). Never meet anyone you met online alone.

Always remember that people online may not be who they say they are. Treat(对待) everyone online as strangers. If something you see or read online makes you uncomfortable, leave it at once. Tell it your parents or your teachers right away. Treat other people as you like to be treated. Never use bad language.

Remember — not everything on the Internet is true. It's important for us to know how to use the Internet safely.

请阅读以下短文全文，并从下列方框里的六个句子中选择五个还原到原文中，使原文的意思完整、连贯。

A company called SkyDrive showed its new flying car，the SD—03.The small car could stay about 1 to 2 meters above the ground，and fly around for 4 minutes with a driver on board.

{#blank#}1{#/blank#} They hope that flying cars will be used for short trips in cities in the future.Flying cars can save time and help reach places easily.

{#blank#}2{#/blank#} With lots of cars flying around，people need to control the traffic in the air.And it is too difficult for people to control in real time.

Safety is another problem.If flying cars fall from the sky，it will hurt not just the people in the car，but people on the ground{#blank#}3{#/blank#}

Cars and airplanes had lots of problems at first，too. {#blank#}4{#/blank#}

Tomohiro Fukuzawa，the CEO of the company，wants the flying cars to be able to fly two people on trips of up to 5 kilometers by 2023.By 2050， "{#blank#}5{#/blank#}".

A.With time，these problems have been solved.

B.Many countries are studying flying cars.

C.But flying cars have some problems，too.

D.I think flying cars will be widely used in the future.

E.How can the flying cars solve the problems？

F.So make sure the flying cars are comfortable enough.

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