试题与答案

疟疾热寄生虫的血红细胞在120天后被排除出人体。由于这种寄生虫无法转移到新一代的血红

题型:单项选择题

题目:

疟疾热寄生虫的血红细胞在120天后被排除出人体。由于这种寄生虫无法转移到新一代的血红细胞内,在一个人迁移到一个没有疟疾的地区120天后,发生在这个人身上的任何发烧情况都不是由疟疾热寄生虫引起的。
以下哪一项如果正确,将最严重地削弱以上的结论

A.疟疾热寄生虫引起的发烧可能同流感病毒引起的发烧相似。

B.在某些情况下,引起疟疾热的寄生虫可以转移到脾细胞内,而脾细胞被清除出人体的频率比血红细胞的频率低。

C.除发烧外的很多疟疾的其他症状,能被抗疟疾药物抑制,但停用药物之后120天后会重新出现。

D.主要的疟疾热寄生虫携带者是疟蚊,在世界上很多地区已被消灭。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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     When my family moved to America from a small village in Guangdong, China, we brought not only our

luggage, but also our village rules, customs and culture. One of the rules is that young people should

always respect elders. Unluckily, this rule led to my very first embarrassment in the United States.

     I had a part-time job as a waiter in a Chinese restaurant. One time, when I was serving food to a

middle-aged couple, the wife asked me how the food could be served so quickly. I told her that I had

made sure they got their food quickly because I always respect the elderly. As soon as I said that, her

face showed great displeasure. My manager, who happened to hear what I said, took me aside and gave me a long lecture about how sensitive (敏感) Americans are and how they dislike the description "old". I

then walked back to the table and apologized to the wife. After the couple heard my reason, they

understood that the problem was caused by cultural differences, so they laughed and were no longer

angry.

     In my village in China, people are proud of being old. Not so many people live to be seventy or

eighty, and people who reach such an age have the most knowledge and experience. Young people

always respect older people because they know they can learn from their rich experience.

     However, in the United States, people think "growing old" is a problem since "old" shows that a

person is going to retire or that the body is not working well. Here many people try to keep themselves

away from growing old by doing exercises or jogging, and women put on makeup, hoping to look young. When I told the couple in the restaurant that I respect the elderly, they got angry because this caused

them to feel they had failed to stay young. I had told them something they didn't want to hear.

     After that, I changed the way I had been with older people. It is not that I don't respect them any

more; I still respect them, but now I don't show my feelings through words.

1. Jack brought the couple their food very fast because        .

A. the manager asked him to do so    

B. he respected the elderly

C. the couple wanted him to do so    

D. he wanted more pay

2. When Jack called the couple "elderly", they became        .

A. nervous

B. satisfied      

C. unhappy

D. excited

3. In Jack's hometown,        .

A. people dislike being called "old"      

B. people are proud of being old

C. many people reach the age of seventy or eighty

D. the elderly are the first to get food in restaurants

4. After this experience, Jack        .

A. lost his job in the restaurant      

B. made friends with the couple

C. no longer respected the elderly      

D. changed his way with older people

5. Which of the following is TRUE?

A. The more Jack explained, the angrier the couple got.

B. Jack wanted to show his feelings through words after his experience.

C. The manager went back to the table and apologized to the couple.

D. From this experience, Jack learned more about American culture.

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