题目内容
According to this passage, what is the "large stone and glass structure"？
查看答案
搜索结果不匹配？点我反馈
更多问题
听力原文： (14) Why do we cry？ Can you imagine life without tears？ Not only do tears keep your eyes lubricated, they also contain a substance that kills certain bacteria so they can't infect your eyes. Give up your tears, and you'll lose this on-the-spot defense. Nobody wants to give up the flood of extra tears you produce when you get something physical or chemical in your eyes. Tears are very good at washing this irritating stuff out. Another thing you couldn't do without your tears is cry from joy, anger or sadness. (17) Humans are the only animals that produce tears in response to emotions, and most people say a good cry makes them feel better. (15) Many scientists, therefore, believe that crying somehow helps us cope with emotional situations. Tear researcher, Winifred, is trying to figure out how it happens. One possibility he says is that tears discharge certain chemicals from your body, chemicals that build up during stress. When people talk about crying it out, "I think that might actually be what they are doing", he says. If Fred is right, what do you think will happen to people who restrain their tears？ (16) Boys, for example ,cry only about a quarter as often as girls once they reach teenage years, and we all cry a lot less now than we did as babies. Could it possibly be that we face less stress？ Maybe we found other ways to deal with it, or maybe we just feel embarrassed.
What's the topic discussed in this passage？
What is the problem with Ann’s present apartment？
听力原文： The U.S. Botanic Garden is America's plant museum. (26) Congress established the Botanic Garden as a center for the science of growing things. But the Garden is also a center of beauty.
(28) The Botanic Garden has twenty-five thousand plants in its collection. (27) Visitors can see many of them in the Garden's public Conservatory. It is a large stone and glass structure near the U.S. Capitol building.
There is a titan arum plant at the U.S. Botanic Garden. It is called the "corpse plant" because its flower smells something like a dead body. Everywhere you look in the Conservatory, something appeals to your eyes. (28) A visitor can move seemingly from one part of Earth to another in just a few seconds. A short walk takes you from desert to thick forest.
(28) The Conservatory offers examples of plants that provide the makings of medicine. It also has plants of special interest to children. (28) Rare and endangered plants occupy a place all their own.
Why did the Congress establish the U.S. Botanic Garden？
According to the passage, what is the main cause of preventable hearing loss？
微信支付 
支付宝支付