Jensen is one of the new study's authors.Almost all of the boys her team studied experienced some hard times as kids.And，she concludes，“This is not necessarily harmful.”To some extent，that's just life.What can be dangerous，she says，is when children experience too many forms of difficulties.Her team's new data suggest that the tougher the childhood，the stronger the impact on the brain might be.
What's happening in the world around us relates to how we feel.Her team linked more childhood stress to more depression.Still，she notes，it's possible that if you find support for anxiety or depression，you might be able to prevent the changes seen here.“If you can change the environment，you can change the course of things，”Sarah says.So，she recommends，if teens develop anxiety or depression，it's good to ask for psychological doctors to give advice.
【语篇解读】 本文为说明文，题材为科普环保类。研究表明童年经历的压力和困难会影响到成年时的大脑的形状和大小。
1．When people had a hard childhood， ． A．they will have a brave attitude to life B．their way of thinking may be strange C．they will be good at dealing with stress D．the shape of their brain may be changed
【解析】 推理判断题。由第一段可知，六岁以前经历许多压力，且青少年时期变得抑郁和焦虑的孩子，长大后其大脑与其他人的不同。
【答案】 D
2．What is the breakthrough of the new research? A．The size of the brain can change. B．The brain can be influenced by stress. C．Poverty can affect the brain's shape in future. D．Changes in brain are connected with earlier hardship.
【解析】 推理判断题。由第二段But no one had tested if the early stress and later brain changes were linked可知，这是第一次把早期的压力和后期的大脑变化联系起来。
【答案】 D
3．It's a problem when children ． A．had a lonely childhood B．led a peaceful childhood
C．got different kinds of hardship D．experienced limited hard times
【解析】 细节理解题。由第三段What can be dangerous，she says，is when children experience too many forms of difficulties可知，经历不同种类的苦难对孩子是很不利的。
【答案】 C
4．For teenagers with anxiety，Sarah suggests . A．they adapt to their life B．they seek professional help C．they talk to friends or relatives D．they become confident and optimistic
【解析】 细节理解题。由最后一段．..it's good to ask for psychological doctors to give advice可知，Sarah建议寻求专业心理医生的帮助。
【答案】 B
【：80702040】
B
Without proper planning，tourism can cause problems.For example，too many tourists can crowd public places that are also enjoyed by the inhabitants of a country.If tourists create too much traffic，the inhabitants become annoyed and unhappy.They began to dislike tourists and to treat them impolitely.They forget how much tourism can help the country's economy.It is important to think about the people of a destination country and how tourism affects them.Tourism should help a country keep the customs and beauty that attract tourists.Tourism should also advance the wealth and happiness of local inhabitants.
Too much tourism can be a problem.If tourism grows too quickly，people must leave other jobs to work in the tourism industry.This means that other parts of the country's economy can suffer.
On the other hand，if there is not enough tourism，people can lose jobs.Business can also lose money.It costs a great deal of money to build large hotels，airports，air terminals，first-class roads，and other support facilities needed by tourist attractions.For example，a major international class tourism hotel can cost as much as 50 thousand dollars per room to build.If this room is not used most of the time，the owner of the hotel lose money.
Building a hotel is just a beginning.There must be many support facilities as well，including roads to get to the hotel，electricity，sewers to handle waste，and water.All of these support facilities cost money.If they are not used because there are not enough tourists，jobs and money are lost.
【语篇解读】 这是一篇议论文。主要论述了发展旅游与保护当地居民权益之间会存在一些问题。
5．Which of the following do you think has been discussed in the part before this selection? A．It is extremely important to develop tourism. B．Building roads and hotel is essential. C．Support facilities are highly necessary. D．Planning is of great importance to tourism.
【解析】 推理判断题。文章一开始就讲到了如果没有适当的计划，旅游业可能面临一些问题。与前文从正反两方面来论述。因此可以断定选文前的一段应该是从正面论述的。
【答案】 D
6．Too much tourism can cause all these problems EXCEPT ． A．a bad effect on other industries B．a change of tourists' customs
C．over-crowdedness of places of interest D．pressure on traffic
【解析】 细节理解题。文章提到了旅游业应促进旅游地当地人习俗的保持，暗含现在可能是改变或破坏了他们的习俗，但是并未提到会改变游客的习俗问题，因此正确答案为B项。
【答案】 B
7．It can be inferred from the text that ． A．the author doesn't like tourism developing so fast B．local people will benefit from tourist attractions
C．other parts of a country's economy won't benefit from tourism much D．we can't build too many support facilities
【解析】 推理判断题。可利用排除法，也可直接根据“They forget how much tourism can help the country's economy，”一句推断得出结论。
【答案】 B
8．The author thinks it is good for local people to know that tourism will ． A．waste a lot of money B．weaken their economy C．help establish their customs
D．help improve their life
【解析】 推理判断题。由全文可知，A、B、C三项明显不符合旅游业的好处，也违背了常理，因此正确答案为D项。
【答案】 D
C
Londoners are great readers.They buy vast numbers of newspapers and magazines and of books－especially paperbacks，which are still comparatively cheap in spite of ever-increasing rises in the costs of printing.They still continue to buy “proper”books，too，printed on good paper and bound(装订)between hard covers.
There are many streets in London containing shops which specialize in book-selling.Perhaps the best known of these is Charring Cross Road in the very heart of London.Here bookshops of all sorts and sizes are to be found，from the celebrated one which boasts of being “the biggest bookshop in the world”to the tiny，dusty little places which seem to have been left over from Dickens' time.Some of these shops stock，or will obtain，any kind of books，but many of them specialize in second-hand books，in art books，in foreign books，in books on philosophy，politics or any other of the countless subjects about which books may be written.One shop in this area specializes only in books about ballet!
Although it may be the most convenient place for Londoners to buy books，Charring Cross Road is not the cheapest.For the really cheap second-hand books，the collector must venture off the beaten track，to Farringdon Road，for example，in the East Central district of London.Here there is nothing so impressive as bookshops.The booksellers come along each morning and pour out their sacks of books onto small handcarts.And the collectors，some professionals and some amateurs，have been waiting for them.In places like this they can still，occasionally，pick up for a few pence an old one that may be worth many pounds.
【语篇解读】 本文主要讲述了伦敦的书店，从出名的书店到街边小推车书摊等。 9．“Londoners are great readers.”means that ． A．Londoners are great because they read a lot B．there are a great number of readers in London C．Londoners are readers who read only great books D．Londoners read a lot
【解析】 句意猜测题。由第一段可知，伦敦人买大量的报纸、杂志和书籍来阅读，故D项正确。
【答案】 D
10．According to this passage，Charring Cross Road ． A．is in the suburbs of London B．is famous for its bookshops C．contains various kinds of shops D．is the busiest street in London
【解析】 细节理解题。由第二段的“There are many streets in London containing shops which specialize in book-selling.Perhaps the best known of these is Charring Cross Road in the very heart of London.”可知B项正确。
【答案】 B
11．In this passage，what does the underlined part “venture off the beaten track”mean? A．Buy books in a most busy street. B．Move away from a busy street. C．Waste time looking for books. D．Take a risk of losing one's life.
【解析】 短语猜测题。由语境可知，要想买便宜的二手书就要离开这些方便的书店去伦敦东部，那儿有人把书放在推车上卖，也就是“从繁忙的街道到僻静的地方”，故B项正确。
【答案】 B
12．On Farringdon Road， ．
A．you can find fine bookshops for the latest books B．there are only small bookshops for the secondhand books C．you can see booksellers selling books on handcarts
D．the same books as the ones in the bookshops of Charring Cross Road are sold
【解析】 细节理解题。由第三段的“The booksellers come along each morning and pour out their sacks of books onto small handcarts.”可知C项正确。
【答案】 C
D
Three men traveling on a train began a conversation about the world's greatest wonders. “In my opinion，”the first man said，“the Egyptian pyramids are the world's greatest wonder.Although they were built thousands of years ago，they are still standing.And remember：the