When you cut your skin, you bleed. If a person loses a lot of blood, he will become ill and may die. Blood is very important. People have always known that. At one time, some people even drank blood t 题目和参考答案——青夏教育精英家教网—

题目内容

When you cut your skin, you bleed(流血). If a person loses a lot of blood, he will become ill and may die. Blood is very important. People have always known that. At one time, some people even drank blood to make them strong!

When doctors understand how blood goes around inside the body, they try ways of giving blood to people who need it. They take blood from the healthy people and give it to people who need it. This is called "blood transfusion（输血）". The blood goes from the arm of the healthy person into the arm of the sick person.

But there are two problems. First, it does not always work. Sometimes people die when they have blood transfusion. Later, doctors find that we do not all have the same kind of blood. There are four groups—O, A, B and AB. We all have blood of one of these groups. They also find that they can give any kind of blood to people of group AB. But they find that they must give A-group blood to A-group people and B-group blood to B-group people. I have O-group blood and the doctor told me that I could give blood to anyone else safely.

There is another problem. To give blood of the right kind, doctors have to find a person of the right blood group. Often they can not find a person in time. If they have a way to keep the blood until someone needs it, they can always have the right kind of blood. At first they find they can keep it in bottles for fifteen to twenty days. They do this by making it very cold. Then they find how to keep it longer. In the end they find a way of keeping blood for a very long time.

We call a place where we keep money a "bank". We call a place where we keep blood a "blood bank". One day, when you grow up, you may decide to give blood to a "blood bank". In this way you may stop someone from dying. Or perhaps one day you may become ill. You may need blood. The "blood bank" will give it to you.

51. From the passage, we learn that sometimes people die when they have blood transfusions because they .

A. are unhealthy people B. have lost a lot of blood

C. are not given the right kind of blood D. are AB-group people

52. Which of the following is true?

A. Doctors can give any kind of blood to the writer.

B. The writer can give blood to B-group people.

C. The writer has never had a blood transfusion.

D. The writer has the same kind of blood as his father.

53. People set up the "blood bank" so that they can .

A. give the right kind of blood to the people who need it in time

B. keep different groups of blood as much as possible

C. make it easier to sell or buy blood

D. keep blood for more than twenty hundred years

54. From the last paragraph (段落) of the passage, we learn that .

A. the writer thinks it's good to give blood to a "blood bank"

B. we may become ill if we give blood to a "blood bank"

C. many people died because they lost a lot of blood

D. blood is more important than money

55. The writer doesn't talk about in the passage.

A. how important blood is to us B. the four groups of blood

C. where the blood bank is D. what "blood transfusion" is

CBAAC

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You are walking down the street, minding your own business when you see a snowball. No big deal, right? Except the snowball is as tall as you are. And weighs about a ton. Did we mention that it is June?

That’s the experience thousand of Londoners had when they crossed paths with “ Snowball in Summer,” Goldsworthy makes sculpture （雕塑）from all sorts of things he finds outside – leaves, earth, and rocks, as well as ice and snow. He wanted to find out how busy people would react to an unexpected snowball melting in their midst.

During the winter of 2008, he rolled 13 giant snowballs near his home in Scotland. He filled each one with a surprise in the center – such as berries, feathers, little stones or sheep’s wool – which would appear as the snow melted. The finished snowballs were stored in a deep freeze until summer, then transported to London in refrigerated trucks. At midnight on June 21, 2008, while the city slept, Goldsworthy and his helpers rolled their snowballs into place.

People walking to work or school must have thought the sky was falling when they stumbled across snowballs the size of baby elephants. Some of them had never even seen snow in real life, and they couldn’t help touching them in great surprise. As the snow started to melt, things got even more interesting. The perfectly round snowballs took on different shapes as the stuff inside began to poke through. Two days later, most of Goldsworthy’s snowballs were gone, and their fillings scattered. But Londoners were left with a really good story about that odd summer day when the snowball came.

What is really special about the snowballs is that ______________________.

A. they lie in the street

B. they are in the shape of baby elephants.

C. they have berries, feathers, little stones and feathers in them.

D. they appear in June.

What was the purpose of Goldsworthy in making the snowballs?

A. To find out people’s reactions to them

B. To call up people’s memory of the cold winter.

C. To show off his skills in sculpture.

D. To let people experience the cold winter.

Why did Goldsworthy and his helpers roll their snowballs into place at mid-night?

A. They didn’t want to disturb other people.

B. It was quite at that time.

C. They wanted to avoid the traffic jam.

D, They wanted to give people a surprise.

Thinking

Some scientists claim that we humans are the only living things that are conscious(有意识的)-we alone are aware that we are thinking.

No one knows how consciousness works –it is one of science’s last great mysteries.

All your thoughts take place in the cerebrum(大脑皮质),which is at the top of your brain, and different kinds of thought are linked to different areas, areas, called association areas.

Each half of the cerebrum has four rounded ends called lobes(脑叶)-two at the front (frontal and temporal lobes)and two at the back (occipital and parietal lobes).

The frontal lobe is linked to your personality and it is where you have your bright ideas.

The temporal lobe is where you hear and understand what people say to you.

The occipital lobe is where you work out what your eyes see.

The parietal lobe is where you record touch, heat and cold, and pain.

The left half of the brain controls the right side of the body. The right half controls the left side.

One half of the brain is always dominant (in charge).Usually, the left brain is dominant, which is why 90% of people are right-handed.

68.Which part of your cerebrum is most active when you are making a telephone call?

A. The frontal lobe. B. The temporal lobe. C. The occipital lobe. D. The parietal lobe.

69.Which of the following statements is true?

A. One’s personality has something to do with the frontal lobe.

B. Bright ideas come from the parietal lobe.

C. The occipital and temperal lobes are at the back of the cerebrum.

D. The occipital lobe is in charge of sound.

70.From the passage, we know the reason why around 10% of people are left-handed is that _______.

A.their frontal lobe is usually dominant B.their temporal lobe is usually dominant

C.their right brain is usually dominant D.their left brain is usually dominant

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