问题 单项选择题

恶性肿瘤患者拔牙时,错误的操作是()

A.对于恶性淋巴瘤患者,必须与有关专家配合,在治疗有效、病情稳定后方可拔牙

B.恶性肿瘤侵犯患牙,引起受累牙疼痛时,为减轻患者的痛苦,应及时拔除受累牙

C.恶性肿瘤侵犯病区牙,引起症状时,为避免拔牙造成肿瘤扩散,应与肿瘤一同行根治性手术

D.恶性肿瘤化疗期间,若需拔牙应对化疗药物的毒副作用有清楚的了解,以权衡拔牙的时机

E.恶性肿瘤放疗前,应对口腔内可能引起炎症且不能保留的患牙先行拔除,避免放疗后引起放射性颌骨骨髓炎

答案

参考答案:B

单项选择题
阅读理解

阅读理解。

     Being able to multitask-doing several things at the same time-is considered a welcome skill by most people.

But if we consider the situation of the young people aged from eight to eighteen, we should think again.

     What we often see nowadays is that young people juggle an ever larger number of electronic devices (电子

产品) as they study. While working, they also surf on the Internet, send out emails, answer the telephone and

listen to music on their iPods. In a sense, they are spending a significant amount of time in fruitless efforts as

they multitask.

     Multitasking is even changing the relationship between family members. As young people give so much

attention to their own worlds, they seem to have no time to spend with the other people around them. They

can no longer greet family members when they enter the house, nor can they eat at the family table.

     Multitasking also affects young people's performance at university and in the workplace. When asked about

their opinion of the effect of modern gadgets (器具) on their performance of tasks, many young people gave

a positive response (反应). However, the response from the worlds of education and business was not quite

as positive. Educators feel that multitasking by children has a serious effect on later development of study skills.

They believe that many college students now need help to improve their study skills. Similarly, employers feel

that young people entering the job market need to be taught all over again, as modern gadgets have made it

unnecessary for them to learn special skills to do their work.

1. What does the underlined word "juggle" in Paragraph 2 most probably mean?

A. Want to buy.

B. Take the place of.

C. Use at the same time.

D. Seek for information from.

2. In Paragraph 3, the author points out that _____.

A. family members do not eat at the family table

B. family member do not greet each other

C. young people live happily in their families

D. young people seldom talk with their family members

3. What is the main idea of the last paragraph?

A. Multitasking is harmful to young people's development.

B. Young people benefit a lot from modern gadgets.

C. Multitasking is an important skill to young people.

D. Young people must learn skills for future jobs.

4. The author develops the passage mainly by _____.

A. providing typical examples

B. following the natural time order

C. comparing opinions from different fields

D. presenting a cause and analyzing its effects