阅读理解(共两节)第一节阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。

ADrive through any American city or suburb, and you will see large space where huge stores are grouped together, sometimes even under one roof.The sight of such huge stores would have been unusual for our grandparents, who shopped in small neighborhood stores.There shopping areas reflect some major changes in American society.The construction of new supermarkets and shopping centers has been continuing over the past forty years.Supermarkets continue to appear because they offer the shopper a wide choice of products in one place — anything from food to small appliances.Because of the large amount of goods sold, supermarkets can offer lower prices than small neighborhood stores can.The convenience and value of large stores and shopping areas make them an important part of the way of American shopping.With the rise of supermarkets and shopping centers, American society has experienced some changes.Most obviously, many small neighborhood stores have disappeared, driven out of business by the large stores.Now Americans use cars even more in order to get to and carry products from the shopping centers, which are typically located farther from many homes.Another change is perhaps the least easy to describe.Americans_are_now_more_isolated．In the neighborhood store, the owner knew about the customers and their families.People in the neighborhood could gather and talk there.Now Americans shop in huge spaces, where no one knows anyone else.Supermarkets have made shopping more personal.It is clear that the number of supermarkets and large shopping areas is still increasing.The pattern of “bigger is better” will probably continue into the future.21．A major change in American society listed in the passage is ________．A．the development in the neighborhoodB．the place for shoppingC．the development in the suburbsD．the relationship between shop owners and customers 22．Compared with small neighborhood stores, supermarkets ________．A．are located everywhereB．are built far away from each otherC．sell various goods at lower pricesD．have limited space for further development23．The underlined sentence in Paragraph 3 means ________．A．shoppers in supermarkets usually don't know each otherB．supermarkets are a good place for shoppingC．supermarkets are controlled by machinesD．shoppers will easily get lost in supermarkets 24．The author believes ________．A．people will try to be friendly while shopping in supermarketsB．supermarkets and large shopping centers will continue to exist in the futureC．supermarkets will probably no longer exist in the futureD．neighborhood stores are equal to supermarkets in convenienceBThe opera house in Santa Fe, New Mexico, is one of the most beautiful opera houses in the United States.It is small and open, with one roof over the stage where singers perform and another roof over part of the audience.This opera house in the mountain is one of the best opera houses in the country, which may seem surprising because performances are only given during seven weeks in the summer, and because Santa Fe is a very small city.One reason why the Santa Fe Opera is so good is that it attracts many excellent young singers.They all hope to sing in famous opera houses like Metropolitan in New York someday, and they work hard to become well-known during the summer.The musicians and directors are experts who come from the best orchestras (管弦乐队) and operas in the country during their vacations.They enjoy working there because they like to live in Santa Fe, which is near both the mountains and the desert.It is very beautiful there in summer.The state government of New Mexico advertises the Santa Fe Opera in newspapers all over the country, and a great many tourists come to New Mexico because of the opera. Still, most of the audience do come from Santa Fe and other nearby cities, and all the seats in the theater are sold for every show.There is only one thing that some people do not like about the Santa Fe Opera, and that is the cold weather.Because the theater is open, performances cannot start before it gets dark at nine o'clock in the evening, and then the mountain air becomes very cool. Sometimes people complain about the cold air, but because the operas are good, these people come back again wearing warm coats.25．This passage mainly introduces________．A．a mountain cityB．young musiciansC．an opera houseD．the tourists in Santa Fe26．Young singers come to perform in Santa Fe Opera because________．A．the music quality is highB．they enjoy the climate thereC．they want to be famousD．they like the scenery there27．Why do some people not like the Santa Fe Opera?A．Because it is always cold all year round.B．Because the theater is open.C．Because there are so many people.D．Because the structure of the opera is not good.28．From the passage, we can learn that________．A．the opera house is openB．musicians always spend vacations in Santa FeC．the government advertises to attract more musiciansD．performances are held in Santa Fe only on SundayCLast year, I lived in Chile for half a year. I lived with a Chilean family and had the responsibilities of any Chilean teenager. I had good days and bad days I didn't understand.Chuquicamata, my host community, is a mining camp. When I arrived there, I was scared. It was so different from what I was used to. There were lots of dogs in the streets, and there was no downtown, few smoothly paved streets, and little to do for entertainment. Rain was not seen very often, earthquakes and windstorms were frequent.I had studied Spanish for two and a half years and was always one of the best students in my class. But in my first week in Chile I was only able to communicate and needed one person to whom I could explain my shock. I couldn't speak the thoughts in my head and there were so many.Most exchange students experienced this like me. Culture shock presents itself in everything from increased aggression towards the people to lack of appetite (食欲). I was required to overcome all difficulties.As time passed, everything changed. I began to forget words in English and to dream in Spanish and love Chilean food. I got used to not depending on expensive things for fun. Fun in Chuquicamata was being with people. And I took math, physics, chemistry, biology, Spanish, art, and philosophy.But the sacrifices were nothing compared to the gain. I learned how to accept and to succeed in another culture. I now have a deeper understanding of both myself and others.29．The author came to Chile last year with the purpose of ________．A．paying a visit to Chile as a touristB．experiencing Chilean life as a teacherC．studying Chilean culture as a college studentD．studying knowledge as an exchange student30．On arriving in Chile, why did the author feel frightened?A．Because he did not know how to get along with the local people.B．Because it was full of dangers like earthquakes and windstorms.C．Because its living conditions were worse than what he was used to.D．Because it was not convenient for him to shop there.31．What did the author most probably think of his life in Chile?A．Wonderful and worthwhile.B．Difficult but meaningful.C．Difficult and meaningless.D．Boring and disappointing.32．According to the passage, which of the following statements about Chile is TRUE?A．Its official language is Spanish and English.B．It is a developing country without foreign students.C．It seldom rains and natural disasters often happen.D．Most Chileans are not friendly to foreigners.DApart from five carp (鲤鱼) that got into Lake Erie in 2004, no Asian carp have been found in the Great Lakes —just traces of their genes, known as “environmental DNA”，or eDNA. Those genes could have come from feces or scales (粪便或鳞片) in the water, but U. S. Geological Survey fish biologist Duane Chapman says the pattern of where they were found suggests more than that.“By far the most likely explanation of those samples is there are one or more live fish of each species (bighead and silver carp) in the Great Lakes，” he says, “I find it hard to believe that the pattern of samples they've found could come from any other source.”The U．S. Army Corps of Engineers began building a series of electric barriers along the Chicago Ship and Sanitary Canal in 2002, aimed at keeping Asian carp and other invasive species out of the Great Lakes. But if there really are Asian carp on the lake side of the electric barriers, how could they have gotten there?“The simple answer is we don't know，” says U．S. Fish and Wildlife spokeswoman Ashley Spratt. “They were specifically designed to keep them from getting into the lake, and they have been very effective. Now the Army Corps is working to speed up construction of a new electronic barrier to strengthen the existing barriers.”The eDNA has renewed calls to shut down the shipping locks (水闸) altogether, which leaders in Chicago and Illinois oppose. They've drawn support from the Obama administration, but the anger of other Great Lakes states — Michigan sued (提出诉讼) to close the locks last year, and although the U. S. Supreme Court declined to hear the case, Michigan, Minnesota, Wisconsin, New York, Ohio and Pennsylvania are pushing ahead with another lawsuit aimed at closing them permanently. President Obama has tried to calm the situation by giving $78.5 million to carp control — a plan that would open the locks less and use poison more — but critics argue that only closing the locks can keep the carp out.33．Duane Chapman seems to believe that ________．A．the Asian carp's genes come from other lakesB．the research on the eDNA lacks experimental evidenceC．no Asian carp can survive in the Great LakesD．there may be Asian carp living in the Great Lakes34．Which of the following is TRUE of the electric barriers?A．They were rebuilt by the U．S. Army Corps of Engineers in 2002.B．They were designed to keep threatened species in the Great Lakes.C．They are meant to help prevent Asian carp from reaching the Great Lakes.D．They are going to be replaced by a new barrier soon.35．The underlined word “declined” in the last paragraph probably means “________”．A．refused B．offeredC．advised D．delayed第二节根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。