2. 外语
  3. Read the article below and choose the best sentence from the list on the next page to fill each of the gaps. For each gap(1-

Read the article below and choose the best sentence from the list on the next page to fill each of the gaps. For each gap(1-

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问题     Read the article below and choose the best sentence from the list on the next page to fill each of the gaps.
    For each gap(1-8)mark one letter(A-H)on your Answer Sheet.
    Do not mark any letter twice.
    Sleeping in Space
    A voyage to Mars would take about eight months on a modern spaceship. That might seem like a great opportunity to catch up on your sleep. 【R1】______
    "If we at some point really want to go to Mars and we want to send humans, then we need to know how they will cope," Mathias Basner told Science News. He is a sleep researcher at the University of Pennsylvania’s Perelman School of Medicine in Philadelphia. 【R2】______
    Their experiment was like a long-running game of make-believe: Six men spent 520 days — a little more than 74 weeks — on a pretend voyage to Mars. In fact, the crew spent the entire time confined inside a small, windowless capsule in Moscow, Russia. 【R3】______
    During their "trip," the travelers pretended to land on Mars and to carry out science tests. Throughout the pretend trip, other scientists collected data on the travelers.
   【R4】______Once every minute, that device recorded the man’s motions. From these data, Basner’s team found that the volunteers were less active and slept more as the pretend mission continued. During the last 18.5 weeks of the trial, most participants were sleeping more each day than they had during the first 18.5 weeks.
   【R5】______One man’s natural sleep cycle shifted from a roughly 24-hour day to almost 25 hours long.(By coincidence, that time is closer to the length of a day on Mars.)This meant that he was sometimes awake when his crew members were asleep, and vice versa.【R6】______Tests showed that he became less alert.
    Messing with sleep can have serious consequences, says Jeffrey Sutton.【R7】______He also directs the Center for Space Medicine at the Baylor College of Medicine in Houston.
    "When you are doing high-risk behavior in space, a performance deficit can be life threatening, he told Science News.
    The decrease in activity found by Basner’s team could also prove problematic in space, says Sutton. 【R8】______
    A. He’s a doctor and scientist who worked on the study.
    B. Another one of the six pretend travelers slept less over time.
    C. His team published its new findings in early January.
    D. Each participant wore a device on his wrist.
    E. Astronauts may need to increase their exercise to stay healthy.
    F. But a recent experiment finds that people may develop sleep problems on a long space journey —or at least on the pretend trip in these tests.
    G Four of the men also developed sleep problems.
    H. The goal of this trial: to learn how people would cope with living in close quarters during travel to and from the Red Planet.
【R6】
选项
答案B
解析 空格处需要填写除了之前提到的四名被试者之外，另一名被试者睡眠不足。空格后是睡眠不足导致的后果，即变得没有以前活泼。除此之外，空格后面的句子提到“he”，即是“another one of the six pretend travelers”。
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