问题 单项选择题

白细胞介导缺血-再灌注损伤的机制是()

A.堵塞毛细血管

B.增加血管壁的通透性

C.产生氧自由基

D.释放溶酶体酶

E.以上都是

答案

参考答案:E

阅读理解

阅读理解。

     ARLES, FRANCE---Andre Raffay has a problem. He needs a nice, large flat in the city of Arles, but he

doesn't have enough money to buy one. Every morning Andre sits in his neighborhood café (附近酒吧) and

reads the flat ads in the newspaper. He draws a circle around each ad for a flat that looks good. Then he goes

to the telephone to call the owner.

     "Hello. I'm interested in the flat near the park that is in today's paper," he says. "How much is it?" When

he hears the answer, he says, "Oh, my goodness! That's too much!" The same thing happens every day.

     One morning Andre sees a friend in the café. He tells him about his problem."I have a good idea, Andre.

I know a 90-year-old woman who has a beautiful flat. You can pay her something every month until she dies.

Then you can move into the flat. It will be yours!"

     Andre is excited. He thinks to himself, "How much longer can such an old lady live? We can probably have

the flat in a few years." He and his wife, Marie, go to visit Mrs. Calment. The flat is just what they want. It is

large and sunny, and it is near the centre of town. It even has a view of the park.

     Andre tells Mrs. Calment,"We will pay you $500 a month, and you can stay here for the rest of your life."

She is very happy. She says, "I really want to stay here. This is my home. Now I don't have to move to my

niece's (侄女) house in the country."

     They sign a contract (签了份协议) that says that Andre and his wife will pay Mrs. Calment $500 every

month. When she dies, the flat will belong to Andre and his wife.

     More than thirty years go by. Jeanne Calment is still alive. She is 121 years old, the oldest person in the

world. Poor Andre isn't alive any more, but his widow (寡妇) still sends Mrs. Calment $500 every month.

Their dream flat is a nightmare (恶梦).

1. They have paid the old woman _______ dollars since they first met her.

A. only $500

B. more than $45,000

C. over $120,000

D. about $180,000

2. Mr. Raffay never thought _______.

A. his dream would come true

B. he could buy what he wanted

C. his dream would become a nightmare

D. he would live until he got a good house

3. From the passage we can learn _______.

A. Mr. Raffay failed his plan

B. his friend fooled (愚弄) him with the old lady

C. his wife would get the flat at last

D. he was very kind and generous to the old

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