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You can’t get there．Other than．by swimming．
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A．themB．thoseC．himD．it
根据下列文章,请回答 36～40 题。
Natural Medicines
Since earliest days。humans have used some kinds of medicines．We know thisbecause humans have survived．Ancient treatments for injury and disease’ were successfulenough to keep humans from dying out completely．
They were successful long before the time of modern medicine．Before thetime of doctors with white coats and shiny(发亮的)instruments．Before the time ofbig hospitals with strange and wonderful equipment．
Many parts of the world still do not have university—educated doctors．Nordo they have expensive hospitals．Yet injures are treated．And diseases are oftencured．How？ By ancient methods．By medicines that might seem mysterious。evenmagical(有魔力的)。Traditional medicines are neither mysterious nor magical。however．
Through the centuries。tribal(部族的)medicine men experimented with plants．Theyfound many useful chemicals in the plants．And scientists believe many of these traditionalmedicines may provide the cure for some of today’s most serous diseases．
Experts say almost 80%of the people in the world use plants for healthcare．These natural medicines are used not lust because people have no otherform. of treatment．They are used because people trust them．In developed areas；fewpeople think about the source of the medicines they buy in a store．Yet manywidely-used medicines are from ancient sources，especially plants．Some expelssay more than 25%of mode J。n medicines come。In one way or another, from nature．
Scientists have long known that nature is really a chemical factory．Allliving things contain chemicals that help them survive．So scientists’ interestin traditional medicine is I new．But it has become an urgent concern．This isbecause the each’S supply of natural medicines may be dropping rapidly．
第 36 题 The passage indicates that ancienttreatments for injury and disease were
根据下列文章,请回答 36～40 题。
Sleep Necessary for Memories
Burning the midnight oil before an exam or interview does harm to the performance according to a recent research which found that sleep is necessary for memories to be taken back into the brain．A good night’s sleep within 30 hours of trying to remember a new task is a required condition of having good recall in the weeks ahead，scientists have found．
The research，published in the December issue of Nature Neuroscience，showed that it was the act of sleep，rather than the simple passage of time，that was critical for long—term memory formation．
“We think that getting that first night’s sleep starts the process of memory consolidation(巩固)，”said Robert Stick gold，a sleep researcher at Harvard Medical School who conducted the．1atest study．
“It seems that memories normally wash out of the brain unless some process nails them down．My suspicion is that sleep is one of those things that does the nailing down，”Professor Stick gold said．
With about one in five people claiming that they are SO chronically short of sleep that it affects their daily activities。the latest work emphasizes the less well-understood side effect—serious memory impairment(损害)．
Volunteers in an experiment found it easier to remember a memory task if they were allowed to sleep that night．But for those kept awake, no amount of subsequent sleep made up for the initial loss．
Professor Stick gold’s team trained 24 people to identify the direction of three diagonal(斜线形的)bars flashed for a sixtieth of a second on a computer screen full of horizontal(水平的)stapes．
Half of the subjects were kept awake that night，while the others slept．Both groups were allowed to sleep for the second and third nights to make up for any differences in tiredness between the volunteers．
Those who slept the first night were significantly and consistently battler at remembering the task while the second group showed no improvement despite enjoying two nights of catch—up sleep．
第 36 题 The research published in Nature Neuroscience showed that what was essential to the formation of long-term memory was
Nowadays men generally live longer than_____________
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