Question

  Imagine working at a job which requires you to lie around all day，watch television，play video games，and surf the Internet. It seems like perfect work for a couch potato―until you find out that you must stay in bed 24 hours a day for 90 days straight！Suddenly, this job doesn't sound like much fun at all.

   A 10-year study by the National Aeronautics and Space Administration(NASA美国国家航天局) has been looking for volunteers to endure enforced(强制) bed rest,allowing doctors to study the effects of weightlessness on the human body. The bed rest recreates as closely as possible conditions which astronauts in space must endure.

   Astronauts returning from space often have temporary physical problems. Many are likely to faint(晕倒) and feel dizziness(眩晕) due to low blood pressure. A long trip in space can also lead to muscle weakness, decreased bone strength, and abnormalities(不正常) in their blood. All of these conditions are exactly like those in the best rest study.

   The studies are done at the University of Texas Medical Branch in Galveston, Texas. Vol?unteers are under the constant supervision of doctors and other healthcare workers, and must fol?low strict guidelines.

   They are not allowed out of bed even to go to the bathroom(厕所) .Meals are brought at regular times, and naps(午睡) are not permitted. At 6:00 a. m. volunteers are awakened, and lights are out at 10:00 p. m. They are supplied with televisions,videos, DVDs,and computers with Internet access. Family and friends may visit.

   To take part in the study, volunteers must be non-smokers, between 25-55 years old,and in excellent health. The volunteers can be given up to $ 17， 000 for travel expenses and lost work time.

(   ) 1. Which of the following activities will the volunteers Not do，when taking part in the study by NASA?

   A.Lying around the bed all day and all night.

   B.Watching television program all the time.

   C.Playing the video games.

   D.Playing basketball with comrades.

(   ) 2. It is true about the volunteers that        .

   A.they are quite healthy

   B.they have to pay a large amount of money on it

   C.they should be very young

   D.they must have the education of university 

(   ) 3. When astronauts return from space,          .

   A.they will have terrible illness for ever

   B.they may have some physical problems all their lives

   C.their blood pressure is likely to be lower

   D.they might become very abnormal

(   ) 4. What does the underlined word "straight" in Paragraph 1 mean?

   A. in a straight way   B. directly and quickly

   C. without stopping, continuously   D. without any movement

Answer 1

1 ~4 DACC     

A篇讲述了为让医生了解航天员在太空失重及返回地面后身体状况出现异常等情况，美国航天中心正在the University of Texas Medical Branch对志愿者进行每天24小时共90天的卧床实验研究。

1.D文中第一段介绍了在NASA接受训练的志愿者的日常活动lie around all day,watch television, play video games, and surf the In-ternet。根据后文的介绍可知这是一个模拟太空航行的训练，D项是不正确的。

2.A最后一段提到了成为志愿者的要求vol?unteers must be non-smokers, between 25-55 years old,and in excellent health。所以A项正确。

3.C第三段介绍了宇航员返回地面可能出现的暂时的身体不适。但不是长期的，更不是终身的。

4.C从第五段可以理解straight在此处是"连续不断的，持续的" 。