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A．toB．aboutC．fromD．around
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根据下列文章,请回答 51～65 题。
A Special Clock
Every living thing has what scientists call a biological clock that controls behavior．The biological clock________(1)plants when to form. flowers and when the flowers should open．It tells insects when to________ (2)the protective cocoon(防护卵袋)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 because of the________ (4)of hours of daylight．In the short________ (5)Of winter，its fur becomes white．The fur becomes gray brown in ________ (6)in the longer hours of daylight in summer．
Inner signals control other________ (7)clocks；1German scientists found that Some kind of internal clock seems to Order birds to begin their Long migration ________ (8)twice each year．Birds ________ (9)from flying become restless when it is time for the trip，________ (10)they become calm again when the time of the flight has ended．
Scientists say they are beginning to learn which ________ (11)of the brain contain biological clocks．An American researcher Martin Moorhead，said a small group of cells near the front of the brain ________ (12)to control the timing of some of our actions．These________ (13)tell a person when to wake，when t0________(14)and when 10 seek food．Scientists say there probably are other biological clock cells that________(15)other body activities．
第 51 题
Paragraph 5 ____________
根据下列文章,请回答 41～45 题。
Florence Nightingale
FlorenceNightingale was born in Florence，Italy, while her wealthy English parents weretraveling in Europe．As a child，she traveled to many places with her family and learnedhow to speak several languages．
WhenNightingale was 17．she told her family that she was going to help sick people．Herparents did not approve，but Nightingale was determined．
Shetraveled to hospitals all over Europe．She saw that doctors were working too hard．Shesaw that patients died because they did not get enough care．Nightingale felt thatwomen could be doing more to help doctors take care of sick people．
Nightingale knew that in order for nurses to do more，they needed specialtraining in how to take care of sick people．Nightingale went to a hospital inGermany to study nursing．Then she returned to London and became the head of agroup of women called Gentlewomen During Illness．These women cared for sickpeople in their homes．
In 1854。Englandwas fighting a war with Russia．War reporters wrote about the terribleconditions in the hospitals that cared for the wounded．People demanded that somethingbe done about it．A leader of the government asked Florence Nightingale to takesome nurses into the war hospitals．S0。in November l 854，Nightingale finally gotto work in a hospital．
She took along 38nurses whom she had trained herself．
At first．thedoctors on the battlefields did not want Nightingale and her nurses in theirhospitals．They did not believe that women could help．But in fact，the nurses didmake a difference．They worked around the clock，tending the sick．Thanks to theirhard work，many wounded soldiers survived．
Afterthe war, Nightingale and her nurses were treated like heroes．Finally, in 1860，shestarted the Nightingale School for Nurses．In time，thanks to FlorenceNightingale，nursing became an important part of medicine．
第 41 题 FlorenceNightingale was born into a rich
A．storyB．informationC．truthD．fear
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