第六部分 完形填空 (每题1分,共15分) ! x4 D7 j) B" e9 U
阅读下面的短文。短文中有15个空白,在文章的后面,每一个空白都列出了四个备选答案。请根据文章的内容选择合适的词或短语填在空白处。
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A Biological Clock
5 `2 g1 C, c7 n* K. y$ y3 [- l# oEvery living thing has what scientists call a biological clock that controls behavior. The biological clock tells _________when to form flowers and when the flowers should open1. It tells _________ when to leave the protective cocoon and fly away, and it tells animals and human beings when to eat, sleep and wake.
2 O. X+ X/ e, n9 D5 @4 p3 Y* Z) Q Events outside the plant and anima __________the actions of some biological clocks. Scientists recently found, for example, that a tiny animal changes the color of its fur________ the number of hours of daylight . In the short _________ of winter , its fur becomes white. The fur becomes gray brown in color in the longer hours of daylight in summer. * b! [! L% E2 R
Inner signals control other biological clocks. German scientists found that some kind of internal clock seems to order birds to begin their long migration __________ twice each year. Birds __________ flying become restless when it is time for the trip, ___________ they become calm again when the time of the flight has ended.
4 s/ A1 I) k* V. _7 B' E7 b# [) d @ Scientists say they are beginning to learn which ____________ of the brain contain biological clocks. An American researcher, Martin Moorhead, said a small group of cells near the front of the brain __________to control the timing of some of our actions. These _________ tell a person when to ___________ , when to sleep and when to seek food. Scientists say there probably are other biological clock cells that control other body activities. 0 x9 S( |9 x/ l
Dr. Moorhead is studying _________ 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. __________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 ________ understanding could cut sickness and accidents at work and would help increase a factory’s production. T3 h6 m8 ]7 y2 {3 U8 _/ }" y
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词汇: 6 f( m4 N J+ M5 \4 t2 j/ d
biological adj. 生物(学)的 migration n.迁徙
9 B' J+ M6 ]# O: f) |insect n.昆虫 restless adj.焦躁不安的 * ^2 o# P5 N; G" f; v0 p( V P" ]
cocoon n.防护卵袋,茧 contain v.含有
) V+ }0 T+ \; M7 sfur n.软毛 cell n. 细胞 - K3 V f6 v) k1 A$ U
3 N5 A& D" _ j' X; ^5 O注释:
7 F, n. H/ ]! Z/ I1、 句中谓语动词tells 的宾语有两部分组成。 第一部分是when to form flowers, 是带疑问浮词的动词不定式,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。
' K/ i/ {7 p0 c; {: R8 }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,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.
4 c. w! r( ^" m; R8 o3、 take 作“花费,花去”解时可用于几种不同的句型: ) x( ~# }; x7 V4 A* P. \4 b$ q
It will take me five days to complete the work. , u# [; i5 f6 X& E) r6 \
The work will take me five days to complete.
3 k% q7 ?% f4 b" Y$ y! q( [To complete this work will take me five days. # h0 z5 x# [5 t6 v- d* l2 C
练习:
0 F# W# A, i& L! e) t5 R1. A) scientists B)humans C)plants D)animals
% f, `# A. k' Q6 N& n1 O2. A)insects B)birds C)fish D)snakes
! _6 B1 d7 B! s0 a( P3. A) effect ; B) affect C)effected D) affected
9 p8 z' z* C, m, @4. A) because B)for the reason that C) because of D)since
( I& {. A! [% D I4 ]8 G% `5. A)months B)days C)minutes D)weeks
6 k% J5 o: M/ F& j; @* c0 _6. A)flight B)fly C)movement D)transportation # g% u( i B. R* t, x
7. A)prevented from B)ordered by C)helped by D)intruded on
" w* z# d0 N; s; ^8. A)and B)but C)therefore D)however 5 C: ?% a* v* y! d& K2 E
9. A)portions B)parts C)sections D)kinds , r( T Y q7 u* E
10. A)try B)tries C)seem D)seems
* d) o5 F& o0 t; b7 S) T11. A)things B)parts C)cells D)actions
7 o& f5 ^" T/ _2 n+ t2 H12. A)awaken B |