According to the passage, why couldn’t PET and functional M.

题目
单选题
According to the passage, why couldn’t PET and functional M. R. I. scans detect subtle changes in blood flow earlier?
A

Because there is early oxygen transfer.

B

Because they do not form their images quickly enough to follow such rapid changes.

C

Because researchers control the changes in blood flow.

D

Because early oxygen transfer gives the flow blood energy.

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第1题:

Why did they lower their heads in shame according to the passage?

A. They did not dare to answer.

B. They had mistaken the relationship of the mice.

C. They regretted driving a poor blind mouse away.

D. They did not express themselves much better.


正确答案:D

第2题:

Why are researches on parrots important according to the passage?

A. The Trust shows great concern for the programme.

B. We need to know more about how to preserve parrots.

C. Many people are interested in collecting parrots.

D. Parrots’ intelligence may some day benefit people.


正确答案:B

第3题:

Why would the Hatches routinely go from store to store?

A. They decided to open a store

B. They wanted to save money

C. They couldn’t afford expensive things

D. They wanted to buy gifts for local kids


正确答案:B

第4题:

Passage Four There was once a man in South America who had a parrot (鹦鹉), a pet bird that could imitate (模拟), human speech. The parrot was unique. There was no other bird like him in the whole world. He could learn to say any word except one. He could not say the name of his native town, Cotano. The man did everything he could to teach the parrot to say “Cotono” but he never succeeded. At first he was very gentle with the bird, but gradually he lost his temper, “You stupid bird! Why can’t you learn to say that One word! Say ‘Cotano’ or I’ll kill you!” But the parrot would not say it. Many times , the man screamed (大声叫), “Say ‘Cotano’ or I’ll kill you!” But the bird would never repeat the name. Finally the man gave up. He picked up the parrot and threw him into the chicken house. “You are even more stupid than the chickens!” In the chicken house, there were four old chickens waiting to be killed for Sunday’s dinner. The next morning, when he went out to the chicken house, the man opened the door. He was shocked by what he saw. He could not believe his eyes and ears. On the floor lay three dead chickens, the parrot was screaming at the fourth, “Say ‘Cotono’ or I’ll kill you!”

(1).Why couldn’t the parrot say the name of his native town?

A.Because it was stupid.

B.Because it didn’t want to live

C.Because the man didn’t teach it how to say.

D.The reason is not mentioned in the story.

(2).Why did the man lose his temper?

A.Because the bird couldn’t repeat his master’s name.

B.Because the bird screamed all day long.

C.Because the bird uttered the wrong word.

D.Because the bird failed to say the name of the town.

(3).Who killed the three chickens?

A.The cruel master

B.The man in the kitchen

C.The pet bird

D.The fourth chicken

(4).Why was the man shocked at the scene the next morning?

A.The bird had finally understood his threat.

B.The bird managed to escape from the chicken house.

C.The bird had learned to scream back to him.

D.The bird was living peacefully with the chicken.

(5).Which of the following is NOT true according to the passage?

A.The man loved his parrot very much and always treated it kindly.

B.The parrot could imitate a lot of human languages.

C.The parrot was thrown into the chicken house by its master.

D.Three of the old chickens were dead the next day.


正确答案: (1).D (2).D (3).C (4).A (5).A

第5题:

-- Why don't you stay a little longer?

-- _____

A. I wish I could, but it's already late.

B. I don't want to.

C. I couldn't.

D. Thank you very much.


参考答案: A

第6题:

According to the passage, what is the most important job for a perfect mom?

________________________________________________________


正确答案:
Being a mom.  

第7题:

I couldn't agree more. That's ______ I only do street shopping.

A whether ;

B because ;

C why


参考答案:C

第8题:

According to the passage, Katy __________________.

A. likes travelling very much B. doesn’t want to live with a family

C. only teaches writing in English D. will go back to school after she leaves Nepal


正确答案:A

第9题:

A good tour guide tells visitors().

A. What they couldn't miss during the trip

B. What during the trip they couldn't miss

C. What couldn't miss they during the trip


答案:A

解析:本句意思:一个好的导游会告诉游客在旅途中不可错过的东西

本题考查宾语从句语序。在正式文体中,宾语从句一定要用陈述语序,即特殊疑问词+主语+谓语动词+加其它成分的结构,据此只能选A。

第10题:

The joke was so funny that we ().

A、couldn t help laugh

B、couldn t help laughing

C、couldn t help but to laugh

D、can t but laugh


参考答案:B

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