问题 单项选择题

随着年龄的增长,人们每天对卡路里的需求量日趋减少,而对维生素B6的需求量却逐渐增加。除非老年人摄入维生素B6作为补充,或者吃些比他们年轻时吃的含更多维生素B6的食物,否则,他们不大可能获得所需要的维生素B6
对以下哪项问题的回答,最有助于评估上述论证( )

A.大多数人在年轻时的饮食所含维生素B6的量是否远超出他们当时每天所需的量
B.强化食量中维生素B6是否比日常饮食中的维生素B6更容易被身体吸收
C.每天需要的卡路里的量减少是否比每天需要增加的维生素B6的量更大
D.老年人每天未获得足够的维生素B6的后果是否比年轻人更严重

答案

参考答案:A

解析: 评价型题目。题干中由“随着年龄的增长人们对卡路里的需求量日趋减少而对维生素B6的需求量逐渐增加”,得出结论“除非老年人摄入维生素B6作为补充,或者吃比年轻时含更多维生素B6的食物。否则他们不可能获得所需要的维生素B6。A选项如果回答“是”,那么大多数人在年轻时的饮食所含维生素B6的量远超出他们当时每天所需的量,现在老年人可能只需要吃些和他们年轻时吃的含相同量的维生素B6的食物即可,是对论证的削弱;如果回答“否”,则是对论证的加强,因为大多数人年轻时饮食中所含维生素B6不是远超出他们每天需要的量,因此当年老需求量增大时,需要额外补充。可见A项是有助于上述论证评估的。
而选项B、C、D无论肯定或否定回答都对题干论证没有影响。

选择题
阅读理解

A qualified doctor who rarely practiced but instead devoted his life to writing. He once said: “Medicine is my lawful wife, and literature is my lover.” Russian writer Anton Pavlovich Chekhov, was a great playwright and one of the masters of the modern short story.

When Chekhov entered the Moscow University Medical School in 1879, he started to publish hundreds of comic short stories to support his family. After he graduated, he wrote regularly for a local daily newspaper.

As a writer he was extremely fast, often producing a short story in an hour or less. Chekhov’s medical and science experience can be seen through the indifference(冷漠) many of his characters show to tragic events. In 1892, he became a full time writer and published some of his most memorable stories.

Chekhov often wrote about the sufferings of life in small town Russia. Tragic events control his characters who are filled with feelings of hopelessness and despair.

It is often said that nothing happens in Chekhov’s stories and plays. He made up for this with his exciting technique for developing drama within his characters. Chekhov’s work combined the calm attitude of a scientist and doctor with the sensitivity(敏感) of an artist.

Some of Chekhov's works were translated into Chinese as early as the 1940s. One of his famous stories, The Man in a Shell, about a school teacher’s extraordinarily orderly life, was selected as a text for Chinese senior students.

小题1:Anton Pavlovich Chekhov ________.

A.had a lawful lover

B.was an illegal writer

C.used to be a lawyer

D.was a competent doctor小题2:In 1880, Chekhov ________.

A.became a full-time writer

B.studied medicine in Moscow University

C.practiced medicine in his hometown

D.published his most memorable stories小题3:Which of the following adjectives can’t be used to describe Chekhov?

A.Sensitive.

B.Cool.

C.Quick-minded.

D.Warm-hearted.小题4:Which of the following is the right order of the events?

a. became a doctor

b. became a full time writer

c. started to publish comic short stories

d. wrote regularly for a local daily newspaper.

e. entered the Moscow University Medical School

A.e→c→a→d→b

B.d→a→b→c→e

C.e→c→b→a→d

D.a→e→c→b→d