[全国职称英语等级考试综合类]2017职称英语等级考试综合类C级完形填空辅导(5)

　2017年职称英语等级考试综合类C级完形填空辅导(5)
　　A Biological Clock
　　Every living thing has what scientists call a biological clock that controls behavior. The biological clock tells 1
　　when to form flowers and when the flowers should open1. It tells 2 when to leave the protective cocoons and
　　fly away, and it tells animals and human beings when to eat, sleep and wake.
　　Events outside the plant and animal 3 the actions of some biological clocks. Scientists recently found, for example, that a tiny animal changes the color of its fur 4 the number of hours of daylight. In the short 5 of winter, its fur becomes white. The fur becomes gray brown in color in the longer hours of daylight in summer.
　　Inner signals control other biological clocks. German scientists found that some kind of internal clock seems to order birds to begin their long migration 6 twice each year.
　　Birds 7 flying become restless when it is time for the trip. 8 they become calm again when the time of the flight has ended.
　　Scientists say they are beginning to learn which 9 of the brain contain biological clocks. An American researcher, Martin Moorhead, said a small group of cells near the front of the brain 10 to control the timing of some of our actions. These 11 tell a person when to 12 , when to sleep and when to seek food. Scientists say there probably are other biological clock cells that control other body activities.
　　Dr. Moorhead is studying 13 our biological clocks affect the way we do our work2. For example, most of us have great difficulty if we must often change to different work hours.
　　14 can take3 many days for a human body to accept the major change in work hours. Dr. Moorhead said industrial officials should have a better understanding of biological clocks and how they affect workers. He said 15 understanding could cut sickness and accidents at work and would help increase a factory’s production.
　　词汇： biological /baiE5lCdVikEl/ adj. 生物(学)的 migration /mai5^reiFEn/ n. 迁徙 insect /5insekt/ n. 昆虫 restless /5restlis/ adj. 焦躁不安的 cocoon /kE5ku:n/ n. 防护卵袋，茧 contain /kEn5tein/ v. 含有 fur /fE:/ n. 软毛 cell /sel/ n. 细胞
　　注释：
　　1. 本句中谓语动词 tells的宾语由两部分组成。第一部分是 when to form flowers，是带疑问副词的动词不定式，
　　2. … the way we do our work可以理解为 the way in which we do our work或 the way that we do our work.实际上，
　　第二部分是 when the flowers should open，是名词从句，从修辞上说，两者有些不平衡。
　　三种说法都成立。如：
　　He speaks English the way the English people do.
　　I don’t understand the way in which he dealt with the matter.
　　3. take作“花费，花去”解时可用于几种不同的句型：
　　It will take me five days to complete the work.
　　The work will take me five days to complete.
　　To complete this work will take me five days.
　　练习：
　　1. A sciensts B humans C plants D animals
　　2. A insects B birds C fish D snakes
　　3. A effect B affect C effected D affected
　　4. A because B for the reason that C because of D since
　　5. A months B days C minutes D weeks
　　6. A flight B fly C movement D transportation
　　7. A prevented from B ordered by C helped by D intruded on
　　8. A and B but C therefore D however
　　9. A portions B part C sections D kinds
　　10. A try B tries C seem D seems
　　11. A things B parts C cells D actions
　　12. A awaken B woke C awakening D wake-up
　　13. A how B why C where D what
　　14. A We B It C They D You
　　15. A so B with C such D if

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