问题 选择题

在研究“磁极间的相互作用规律”时,实验小组的同学分别设计了如下四个方案,其中最合理的是 [ ]

A.两人各拿一块条形磁铁,并将各自的一个磁极相互靠近

B.用一块条形磁铁的一个磁极靠近另一块条形磁铁中间

C.将放在粗糙桌面上的两块条形磁铁的磁极相互靠近

D.用条形磁铁的一个磁极靠近另一块用细线悬挂并静止的条形磁铁的一个磁极

答案

答案:D

阅读理解

     According to decades-long research, women who took low to moderate (节制) daily doses of

aspirin had a reduced death rate ,especially from heart disease.

     The research,based on data from a major trial that has tracked almost 80,000 women since 1976,

found that women who reported using aspirin on a regular basis had a 25 percent lower risk of death

 from any cause than women who didn't take the drug.

     The risk of death from cardiovascular (心血管的) disease was 38 percent lower for aspirin users,

and there was also a 12 percent reduction in cancer deaths that took effect after a decade of aspirin

use, the researchers found in their report based on the Nurses' Health Study.

     However,an accompanying editorial in the journal cautioned that the results were open to debate

and far from definitive.

     The dissenting (持异议的) editorial was based on results of an earlier trial by the Women's Health

Study, which followed almost 40,000 women for 11 years and found no reduction in overall deaths.

Therefore,the new findings" cannot overcome the accumulated evidence that aspirin is not particularly

effective for the primary prevention of death from cardiovascular disease in women. "

     " This is a complicated issue , " said Dr. Andrew T. Chan, leading author of the new report. "We

understand that aspirin has potential health benefits,but who would aspirin therapy(疗法) be appropriate

for? There are areas of disagreements that need further study before that question can be answered" ,

Chan said. But there is information from the two large studies and other trials that can help guide women

and their physicians,he said. And anyone who is thinking about daily aspirin should really talk with doctors about the benefits and risks.

1.  The new report clearly benefits the women suffering _____.   

A. heart disease                

B. cancer

C. lose of memory                  

D. aspirin side effects

2. Which of the following questions hasn't been solved according to Dr. Chan?   

A. Whether aspirin is beneficial for health?

B. Which of the two researches is really reliable?

C. Who will do the further study in this area?

D. Who are proper for this treatment?

3. Which research does the author seem to support? 

A. The new one.                

B. The earlier one.

C. Neither.                            

D. Both.

 4.We know from the last paragraph that women who trust the treatment should ____.  

A. be very careful about it

B. start immediately with the help of their physicians

C. concentrate on the benefits instead of the risks

D. turn to their physicians for only the benefit it has

5. What is the main purpose of the passage?       

A. To promote the new aspirin therapy to women.

B. To introduce two controversial researches.

C. To draw a final conclusion on the debate.

D. To help women live longer and healthier.

单项选择题