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根据下面材料，回答题。
Florence Nightingale
In 1837， to the age of seventeen， Florence Nightingale decided to become a nurse，___51____ horrified her dear mother. In ___52____ days， nurses were little more than doormen， and hospitals were places of dirtiness and ___53____. Nightingale pressed on and in 1853 she became president ___54____ a small London hospital. She went on to the Crimea when war ___55____ there between Britain and Russia. She ___56____ the first of what we now know ___57 ____war hospitals: sanitary，safe， and stocked with supplies. Her tireless ministrations （照料） to the ___58 ____soldiers made her famous all ___59 ____the world. Following the War， Nightingale ___60____ fame and continued to train nurse， ever battling ___61____ what she herself declared "a commonly received idea..， that it requires nothing ___62____ a disappointment in love， or incapacity in other things， to turn a woman ___63____ a good nurse." Since 1921， her birthday ___64____ the centerpiece of National Hospital Week，___65____ in British and American hospitals with special exhibitions， workshops， and publicity drives.
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大蒜中的硫化物多达30种，其中生物活性最强的为()。
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根据下面材料，回答题。
A Thirsty World
The world is not only hungry, it is also thirsty for water. This may seem strange to you, since nearly 75% of the earth&39;s surface is covered with water. But about 97% of this huge amount is sea-water, or salt water. Man can only drink and use the other 3%--the fresh water that comes from rivers, lakes, underground, and other sources.____46____, because some of it is in the form. of icebergs and glaciers. Even worse, some of it has been polluted.
At the moment, his small amount of fresh water is still enough for us. However, our need for water is increasing rapidly. Only if we take steps to deal with this problem now, can we avoid a severe worldwide water shortage later on. One of the useful steps we can take is to stop unlimited use of water.____47____, however, would have a bad effect on agriculture and industry.
In addition to stopping wasting our precious water, one more useful step we should take is to develop ways of reusing it.____48____, but only on a small scale.
Today, in most large cities, water is used only once and it eventually returns to the sea or runs into underground storage tanks. But it is possible to pipe water that has been used to a purifying plant. There it can be filtered and treated with chemicals ____49____ .
____50____, we still would not have enough. Where could we turn next？ To the oceans! All we&39;d have to do to make use of the vast amount of sea-water is--remove the salt. This salt-removing process is already in use in many parts of the world. So if we take all these steps, we&39;ll be in no danger of drying up !
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The average modified mouse lived__________. 查看材料
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