问题 单项选择题 A1/A2型题

男性血友病患者,与正常女性结婚,遗传咨询正确的是()

A.其子女只有男孩正常

B.其女儿有50%患血友病

C.其女儿有25%患血友病

D.其子女只有男孩不正常

E.其子女均为杂合子

答案

参考答案:A

选择题
阅读理解

阅读理解。

     We have met the enemy and he is ours. We bought him at a pet shop. When monkey-pox, a disease usually

found in the African rain forest, suddenly turns up in children in the American Midwest, it's hard not to wonder of the disease that comes from foreign animals is homing in on human beings." Most of the infections (感染)

we think of as human infections started in other animals" says Stephen Morse director of the Center for Public

Health Preparedness at Columbia University.

     It's not just that we're going to where the animals are ; we're also bringing them closer to us. Popular

foreign pets have brought a whole new disease to this country. A strange illness killed Isaksen's pets and she

now thinks that keeping foreign pets is a bad idea."I don't think it's fair to have them as pets when we have

such a limited knowledge of them" says Isaksen.

     " Laws allowing these animals to be brought in from deep forest areas without stricter control need

changing," says Peter Schantz. Monkey-pox may be the wake-up call. Researchers believe infected animals

may infect their owners. We know very little about these new diseases. A new bug (病毒) may be kind at first. But it may de- velop into something harmful (有害的). Monkey-pox doesn't look a major infectious disease.

But it is not impossible to pass the disease from person to person.

1. We learn from Paragraph 1 that the pet sold at the shop may _____.

A. come from Columbia

B. prevent us from being infected

C. enjoy being with children

D. suffer from monkey-pox

2. Why did Isaksen advise people not to have foreign pets?

A. They attack human beings.

B. We need to study native animals.

C. They can't live out of the rain forest.

D. We do not know much about them yet.

3. What does the phrase" the wake-up call" in Paragraph 3 most probably mean?

A. A new disease.

B. A clear warning.

C. A dangerous animal.

D. A morning call.

4. The text suggests that in the future we______.

A. may have to fight against more new diseases

B. may easily get infected by diseases from dogs

C. should not be allowed to have pets

D. should stop buying pets from Africa