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美國國家航天局) has been looking for volunteers to endure enforced(強(qiáng)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(暈倒) and feel dizziness(眩暈) 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(廁所) .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篇講述了為讓醫(yī)生了解航天員在太空失重及返回地面后身體狀況出現(xiàn)異常等情況，美國航天中心正在the University of Texas Medical Branch對志愿者進(jìn)行每天24小時共90天的臥床實(shí)驗(yàn)研究。

1.D文中第一段介紹了在NASA接受訓(xùn)練的志愿者的日常活動lie around all day,watch television, play video games, and surf the In-ternet。根據(jù)后文的介紹可知這是一個模擬太空航行的訓(xùn)練，D項(xiàng)是不正確的。

2.A最后一段提到了成為志愿者的要求vol?unteers must be non-smokers, between 25-55 years old,and in excellent health。所以A項(xiàng)正確。

3.C第三段介紹了宇航員返回地面可能出現(xiàn)的暫時的身體不適。但不是長期的，更不是終身的。

4.C從第五段可以理解straight在此處是"連續(xù)不斷的，持續(xù)的" 。