题组层级快练14 Unit 4 Astronomy the science of the stars “阅读七选五完形”组合练(时间：35分钟).阅读理解阅读下列短文，从每题所给的四个选项(A、B、C和D)中选出最佳选项。(原创)A new study shows a vaccine designed to prevent dengue fever(登革热)could actually be making people sick. Dengue infects an estimated 400 million people worldwide each year. The virus spreads to human beings through the bite of an insect, the mosquito.Most people who get dengue suffer health problems like those resulting from a mild case of influenza, like a higher than normal body temperature. But the illness is more severe the second time a person gets it. In serious cases, it can cause bleeding inside the body and even death. About 25，000 people a year die from the infection.The drug Dengvaxia is so far the only vaccine approved for use against dengue. Several countries including Brazil, Mexico, Costa Rica, Paraguay and the Philippines have already approved use of the drug.Trials of Dengvaxia involved more than 30，000 people in 10 countries. Among young people, the drug was found to reduce infections by 60 percent, and hospitalizations by 80 percent. But over time, many of those vaccinated got seriously ill with dengue.Researchers from Britain and the United States studied the results of the tests. They found the vaccine acted as a first infection in people who had not had the virus before. The researchers reported their findings in the journal Science. They say they are concerned that people who get infected a second time after the vaccine can get severely sick. The study found that the vaccine should not be a problem in countries with many cases of dengue. In such areas, Dengvaxia was found to reduce severe sickness and hospitalizations by 20 percent to 30 percent. But the researchers warned that in countries where only 10 percent of people have been infected with dengue, the vaccine needs to be carefully used. Ideally, RodriguezBarraquer said, people should be tested before getting vaccinated, to see if they have been infected in the past.1. How many countries have approved the use of Dengvaxia?A. Three.B. Four.C. Five. D. Six.2. Whats the problem of the drug Dengvaxia?A. Children who are vaccinated will have a high fever.B. It doesnt work on young people when vaccinated for the first time.C. People who get infected a second time after the vaccine can get severely sick.D. It can not be given to anyone younger than twelve years old.3. From the last paragraph we can infer _A. the vaccine can be used in areas with serious dengueB. anyone who wants to get vaccinated must be tested firstC. the vaccine can reduce the cases of dengue by 10% in totalD. dengue fever will spread much more quickly if people refuse to get vaccinated4. Whats the best title of the passage?A. Ways of Preventing Dengue FeverB. Dengue Fever Can be Completely CuredC. New Dengue Vaccine Could Cause Serious IllnessD. The Drug Dengvaxia Is Widely Used Throughout the World答案与解析【文章大意】一项最新科学实验表明：目前唯一的预防登革热病毒的疫苗Dengvaxia存在诸多问题。1. 答案C解析细节理解题。根据第三段中的Several countries including Brazil, Mexico, Costa Rica, Paraguay and the Philippines have already approved use of the drug.可知，这种疫苗已经在巴西、墨西哥、哥斯达黎加、巴拉圭和菲律宾5个国家开始使用，故C项正确。2. 答案C解析细节理解题。根据第五段中的They say they are concerned that people who get infected a second time after the vaccine can get severely sick.可知，研究家们发现，对于注射了登革热疫苗之后再次感染的人群而言，他们的病情会变得更加严重。3. 答案A解析判断推理题。根据最后一段表述可知，在登革热病毒盛行的地区国家，使用这种疫苗应该没有什么问题，但在感染率仅有10%的国家，建议人们在注射这种疫苗之前进行一次严格的检查以确定是否以前感染过这种病毒。由此可知A项正确。其它各项表述均与原文不符。4. 答案C解析主旨大意题。本文是一篇新闻报道，讲述了一项最新的科学实验结果：登革热疫苗Dengvaxia存在问题，再结合文章的首句可知C项正确。.阅读填空根据短文内容，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。(2017江西八校联考)Most of you love watching movies. They can be funny, sad, imaginative, inspiring, and so much more! There are so many possibilities and so many great movies to watch!The making of a movie usually begins with a script(剧本). _1_ The producer is the person who is responsible for coordinating(协调)aspects of the film like budget and scheduling. The producer plans out how the project will be carried out and he usually starts by hiring a director!_2_ The director will usually identify themes or feelings that he or she wants the movie to convey to its audience and will then assemble(聚集)all the other people who will be needed, such as costumedesigners, makeup artists, special effects crew, stuntmen, cameramen, and, of course, actors!Next, shooting begins! _3_ Often a director will want to get several “takes”(versions)of a scene or moment and usually only a few minutes of the movie are finished in one days work. _4_ So once filming is completed, the director must then work with editors to piece them all together, deciding which takes to use and adding in any special effects or touchups.The entire process from acquiring the script to editing the scenes generally takes months or even years! Once its ready, the finished movie is then distributed to movie theatres. _