阅读理解:  阅读下列短文，从每题所给的A、B、C和D项中，选出最佳选项。

It is difficult for doctors to help a person with a damaged brain Without enough blood, the brain lives for only three to five minutes More often the doctors can’t fix the damage Sometimes they are afraid to try something to help because it is dangerous to work on the brain The doctors might make the person worse if he operates on the brain

Dr. Robert White, a famous professor and doctor, thinks he knows a way to help He thinks doctors should make the brain very cold. If it is very cold, the brain can live without blood for 30 minutes. This gives the doctor a longer time to do something for the brain.

Dr. White tried his idea on 13 monkeys. First he taught them to do different jobs, then he operated on them. He made the monkeys’ blood back to the monkeys’ brains. When the brain’s temperature was 10℃, Dr. White stopped the blood to the brain. After 30 minutes he turned the blood back on. He warmed the blood again. After their operations the monkeys were like they had been before. They were healthy and busy. Each one could still do the jobs the doctor had taught them.

1. The biggest difficulty in operating on the damaged brain is that_____.

A. the time is too short for doctors     

B. the patients are often too nervous

C. the damage is extremely hard to fix

D. the blood-cooling machine might break down w*w

2. The brain operation was made possible mainly by        .

A. taking the blood out of the brain         B. trying the operation on monkeys first

C. having the blood go through a machine      D. lowering the brain’s temperature

3. With Dr. White’s new idea, the operation on the damaged brain        .

A. can last as long as 30 minutes    B. can keep the brain’s blood warm

C. can keep the patient’s brain healthy  D. can help monkeys do different jobs

4. What is the right order of the steps in the operations?

A. send the cooled back to the brain       B. stop the blood to the brain

C. have the blood cooled down        D. operate on the brain

A. a, b, c, d       B. c, a, b, d       C. c, b, d, a       D. b, c, d, a

5. Which of the following is not true?

A. If there isn’t enough blood, the brain can live for only three to five minutes.

B. If the brain is very cold, it can live without blood for half an hour.

C. Dr. White tried his idea for thirteen times.

D. After their operations, the monkeys were healthy and busy again

第二节：短文改错（共10小题；每小题1分，满分10分）
此题要求改正所给短文中的错误。短文中有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（^），并在其下面写出该加的词。[来源:学科网ZXXK]
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：    1．每处错误及其修改均仅限一词。
2．只允许修改10处，多者（从第11处起）不计分。
The students of Class 3 have a discussion about if it is necessary learn English from childhood. Some think it necessary. As a little boys and girls have a very good memory, they can learn many English words by hearts, what will help them lay a solid foundation for their future English learning. But others do not agree. Children have to learn Chinese Pinyin. If they study Chinese Pinyin or English at the same time, it will be very easily for them to mix them up. This would do a lot of harm with their learning. In short, the students have not reached any agreement still.

Memory is the ability to keep track of things that have happened in the past. Memory really is learning. One needs memory to ride a bicycle. A dog needs to remember if it is to come when called.

Memory is said to be stored in the brain as a “memory trace（记忆痕）.” What makes up this trace is not known. Some scientists believe that certain chemical substances may carry certain memories. For example, one substance, when given to rats, causes them to fear the dark.

Other research into memory has to do with how the brain works. Psychologists use three means to find out how a person remembers. For example, give a person a grocery list. Let the person memorize the list, then put it away. The most natural way to find out how much a person remembers of the grocery list is to ask what he or she remembers. This is called the method of recall. Another method is called recognition. Give the person another grocery list. Ask him or her to choose items on the first list from the items that are on only the second list. Often a person will be able to recognize things that he or she cannot recall. A third method of finding how much a person remembers is called relearning. Here the person is asked to read over the first list. The person will probably learn the list the second time faster than he did the first time. The difference in the time it takes to relearn the list is thought of as a measure of how much a person has remembered.

One way of remembering something is to repeat it many times. Interest is very important. Boring lists of facts are much more difficult to remember than something that we understand and are interested in. Motivation, or wanting to do something, is also important. Motivation is linked with reward. For example, a hungry animal quickly learns how to do something if that action gets the animal food. In humans, wanting to learn is often motivation. The praise of a teacher or the knowledge that an answer is correct is rewarding.

1.We can learn from the 2nd paragraph that ___________       .

2.The way to pick out the items on the first list from the second is known as ________ .

3.What is considered as a measure of how much one has remembered?

4.A good way to train an animal to do something quickly is to ________.

     for the free tickets,I would not have gone to the films so often.

A.If it is not                B.Were it not

C.Had it not been             D.If they were not

________ for the free tickets, I would not have gone to see the films so often.

1. A.
   If it is not
2. B.
   Were it not
3. C.
   Had it not been
4. D.
   If they were not