问题 单项选择题

为了避免戊型肝炎的流行,血液中心将立即开始筛选所有的献血者。尽管新的筛选测试估计将从献血者中筛选掉5%,却仍然会放过三分之二的戊型肝炎携带者。因此,大约10%的献血者将仍然提供带有戊型肝炎病菌的血液。 上面的推论基于以下哪项假设

A.在大量的案例中,携带戊型肝炎的献血者并不会发病

B.对被戊型肝炎测试筛选下来的献血者数字的估计是被低估了的

C.在大量的案例中,携带戊型肝炎病菌的献血者并没有携带其它常规测试能够筛选出来的相关病菌

D.在想要献血的人中,戊型肝炎患者的比例比在整个人口中的比例要低

答案

参考答案:C

解析: 前提型题目。题干推论为“医院在筛选所有的献血者后,仍然会放过三分之二的戊型肝炎携带者”。C项是必须的假设,因为大量的携带戊型肝炎病菌的人不能够被常规测试筛查出来,因此才会在进行筛查后仍会放过大量的戊型肝炎病菌携带者;其他各项都不是必须的假设。故答案选C。

阅读理解

About 30 years ago, I left Cuba for the United States with my son. After getting settled finally in Brunswick, New Jersey, I enrolled(注册) my son in kindergarten. Several weeks later, my son’s teacher asked me to meet him at his office.

In the teacher’s office, and exchange of greetings was followed by his questions: “ Is your son mentally retarded(弱智的)? Does he suffer from any kind of mental disability?”

Was he talking about my wonderful Scola? No, no, it can’t be. What a helpless, lonely moment! I told him that Scola was a quiet, sweet little boy, instead. I asked him why he was asking me all these questions.

My son could not follow the teacher’s directions, he told me, and thus, Scola was disrupting the class. Didn’t he know my son did not speak English yet?

He was angry: “ Why hasn’t your son been taught to speak English? Don’t you speak English at home?”

No, I didn’t speak English at home, I replied. I was sure my son would learn English in a couple of months, and I didn’t want him to forget his native language. Well, wrong answer! What kind of person would not speak in English to her son at home and at all times? “ Are you one of those people who come to this country to save dollars and sent them back to their country, never wanting to be a part of this society?”

Needless to say, I tried to tell him I was not one of “ those people.” Then he told me the meeting was over, and I left.

As I had expected, my son learned to speak English fluently before the school year was over. He went on to graduate from college and got a job, earning close to six figures. He travels widely and leads a well-adjusted, contented life. And he has benefited from being bilingual(双语的)。

Speaking more than one language allows people to communicate with others; it teaches people about other cultures and other places- something very basic and obviously lacking in the “educator” I met in New Jersey.

小题1:The teacher asked the author to his office________.

A.to work out a study plan for Scola

B.to get Scola enrolled in kindergarten

C.to discuss Scola’s in-class performance

D.to find a language partner for Scola小题2:What does the underlined word “disrupting” in Paragraph 4 probably  mean?

A.Attending

B.Disturbing

C.Breaking

D.Following小题3:The author’s attitude towards being bilingual may best be described as __________.

A.positive

B.critical

C.casual

D.passive小题4:This text is likely to be selected from a book of __________.

A.geography

B.medicine

C.history

D.education

单项选择题