题目
题型：不详难度：来源：
For the last few years, the genetic advances in the fast developing field of biotechnology have provided material for all kinds of work, but the developments of modern science in unlocking the secrets of human genetic code have opened a world of possibilities for human health, as well as for the population imagination.
While European and Japanese researchers are making rapid progress in decoding human DNA, the leading organization for genetic research in the Untied States, which began in 1990, is “unlocking the code” of the human body to learn how to defeat fatal diseases. Already, the Human Genome Project has become widely known and praised for finding the genes connected with as yet terrible diseases, and making progress toward separating the genes that show a sign of breast cancer(乳腺癌)or AIDS.
Once these genes are found and studied, researchers can develop new ways to attack infections, and genetic diseases. Medical companies are very interested in mapping the human genome, as they expect to develop a lot of new drugs for these illnesses.
小题1:Why did the scientists work so hard at mapping the human genome?
| A．Because the human genome can destroy many illnesses. |
| B．Because the human genome’s completion can help to get rid of many diseases. |
| C．Because they wanted to be better known than others. |
| D．Because the Human Genome Project can provided a lot of chances of work. |
| A．Japan | B．Germany |
| C．The United States | D．China |
| A．If the genes can be found, scientists can study many new ways to cure illnesses. |
| B．The United States began genetic research early in the 19th century. |
| C．Many medical companies show great interest in drawing the human genome map. |
| D．The scientists have made great progress in connecting some genes with the cancers. |
| A．The great human genome. | B．The discovery of genes. |
| C．Unlocking the genetic code. | D．Genes and scientists. |
答案
小题1:B
小题2:C
小题3:B
小题4:C
解析
小题1:细节题。根据文章第1段3,4行about the chances genetic research provides for getting rid of diseases and prolonging(延长)human life.
小题2:细节题。根据第三段第2行the leading organization for genetic research in the Untied States, which began in 1990,。
小题3:细节题。ACD三项在文章中军提及了。B想表达错误。根据第三段第2，3行the leading organization for genetic research in the Untied States, which began in 1990。
小题4:主旨大意题。文章是关于解开基因密码的问题。
核心考点
试题【The Human Genome(基因组) Project, a great $3 billion, 15-year task aimed at drawing】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
FreeRice.com is a non-profit website run by the United Nations World Food Program (UNWFP). It aims to provide education to everyone for free and help end world hunger. Join us and have fun with our vocabulary game. For each vocabulary word you get right, we donate free rice through UNWFP to those hungry people.
How do you play the vocabulary game?
Click on the answer that is closest in meaning to the word. If you get it right, you get a harder word. If wrong, you get an easier word. For each word you get right, we donate 20 grains of rice to UNWFP.
How does the vocabulary game help you?
This game may make you smarter. While learning new vocabulary, it can help you:
★Present your ideas better
★Write better papers, e-mails and business letters
★Speak more accurately and influentially
★Read faster because you understand better
★Get better grades in high school and college
★Perform better at job interviews
★Be more effective and successful at your job
After you have done FreeRice for a couple of days, you may notice a phenomenon. Words that you have never consciously used before will begin to pop into your head while you are speaking or writing. You will feel yourself using and knowing more words.
How does the FreeRice vocabulary program work?
FreeRice has a database containing thousands of words at different levels of difficulty. There are words proper for people just learning English and words that will challenge the most learned professors. In between are thousands of words for students, business people, doctors, truck drivers… everyone!
FreeRice adjusts to your level of vocabulary. It starts by giving you words at different levels of difficulty and then, based on how you do, designs a proper starting level for you. When you get a word wrong, you go to an easier level. When you get three words in a row right, you go to a harder level. There are 60 levels in all, but it is rare for people to get above Level 50.
Sign up now and you will have fun as well as help end world hunger.
小题1:According to the passage, the purpose of the vocabulary game is to ______.
| A．combine English learning with helping hungry people |
| B．make it popular in English-speaking countries |
| C．encourage people to produce more rice |
| D．provide English learning for poor areas |
| A．develop some new ideas |
| B．increase chances of job interview |
| C．be admitted to a university |
| D．perform better in a speech competition |
| A．it is free of charge |
| B．it offers fair chances to everyone |
| C．it changes levels with their performance |
| D．it meets the needs of people in different fields |
People sometimes make a cheetah a leopard(美洲豹)because they both have spots, but in fact they are very different. A leopard is far heavier and more powerful, but also much slower. The cheetah’s spots cover most of its body except for its stomach and throat. The cheetah’s tail has spots and these become rings at the end of the tail.
An adult cheetah weighs between 35-65 kilograms and is about 80 centimeters high at the shoulder. The cheetah’s head is quite small and the eyes are quite high up. A black line runs from each eye down to its mouth and makes it look a little sad. It has high shoulders that help it to walk so gracefully.
Cheetahs are very fast but they are not very strong. They are not good fighters and will run away rather than fight another animal to protect their food. If they make a kill, it is sometimes taken away from them by stronger animals such as lions and leopard. These animals will kill their young if they get the chance. The cheetah is not a threat to humans at all. It will not attack humans and prefers to stay away from occupied areas.
小题1:Many people know that the cheetah________
| A．is a fast runner |
| B．runs faster than any other animal on land |
| C．runs as fast as it can |
| D．is very fast for periods of time |
| A．has spots all over its body including its tail |
| B．has spots on its stomach and throat |
| C．does not have spots on its stomach and throat |
| D．has spots everywhere except for its stomach and throat |
| A．they can quickly run away |
| B．they are very fast runners |
| C．They want to protect their young |
| D．They are poor fighters |
After Fukushima, Germany decided to switch off all its nuclear plants by 2022. Switzerland and Italy are also phasing out nuclear power. But France and the United States remain staunch supporters of atomic energy. In fact, almost 80% of France’s electricity comes from nuclear power, the highest percentage in the world. And in the US, the Obama administration said it “continues to support the expansion of nuclear power, despite the crisis in Japan.”
Nuclear supporters claim nuclear power can help the environment. Unlike fossil fuels, nuclear power doesn’t create greenhouse gases. So, pro-nuclear countries argue that nuclear power allows them to generate energy without contributing to climate change. Britain’s chief scientific adviser (John Beddington) supports this view. He recently said that the world doesn’t have the luxury of ignoring nuclear energy.
Nuclear power is also relatively cheap. Renewable energy sources such as solar, hydro and wind power may be clean, but they’re expensive; and right now, they require a lot of investment. This higher cost of using “green energy” is usually passed onto the consumer. So, while many people may prefer their energy to come from a renewable source, not so many are prepared to pay higher energy bills. This is of particular concern while the world economy is in such bad shape.
The main argument against nuclear energy is that it isn’t safe. For a start, nuclear waste is very difficult to dispose of, and remains toxic to humans for thousands of years. And even before Fukushima, there were several high-profile nuclear disasters. The most famous is probably the 1986 Chernobyl disaster, in the Ukraine. The radiation from the meltdown spread all over Europe, affecting thousands.
The nuclear energy issue is very complex. And it doesn’t look like it’ll be resolved anytime soon. As a Japanese commentator recently said, “it’s been a bad year for the ‘nuclear village’, but I don’t think they’re down and out yet.” The battle continues.
小题1:Which of the following may NOT be the advantage of nuclear energy over other energy sources?
| A．Nuclear energy doesn’t produce any greenhouse gases. |
| B．Nuclear energy can help prevent the climate damage. |
| C．Nuclear energy is more environmental-friendly than other green energy sources. |
| D．Nuclear energy can save the consumers some money, compared to other renewable energies. |
| A．The fact that many people prefer to use the green energy sources while unwilling to pay higher bill. |
| B．The cost of using renewable sources |
| C．The fact that the nuclear power is cheaper. |
| D．The investment of renewable energy sources |
| A．the Japanese commentator is positive about the future of nuclear energy |
| B．the nuclear energy issue will be soon settled |
| C．a battle will break out in the future |
| D．Japan is considering to build a nuclear village in the future |
| A．To highlight the danger of using nuclear energy. |
| B．To introduce some serious nuclear disasters. |
| C．To show the argument between nuclear supporters and protesters. |
| D．To give some advice on how to use nuclear energy safely. |
A new report says virus may be at least partly responsible for the disorder in honey bee colonies in the United States. This virus is called Israeli acute paralysis virus. It was first identified in Israel in 2004. Ian Lipkin at Columbia University in New York and a team reported the new findings in Science magazine. Doctor Lipkin says the virus may not be the only cause. He says it may work with other causes to produce the collapse disorder.
The team found the virus in colonies with the help of a map of honey bee genes that was published last year. They examined thirty colonies affected by the disorder. They found evidence of the virus in twenty–five of them, and in one healthy colony. The next step is further testing of healthy hives.
The researchers suggested that the United States may have imported the disorder in bees from Australia. They say the bees may carry the virus but not be affected.
The idea is that unlike many American bees, the ability of Australian bees to fight disease has not been hurt by the varroa mite（全球性的蜂虱）. This insect attacks honey bees, which could make the disorder more likely to affect a hive. Australian bee producers reject these suspicions.
And some researchers suspect that bee production in the United States is down mainly because of the weather. Honey bees gather nectar（花蜜） from flowers and trees. The sweet liquid gives them food and material to make honey. But cold weather this spring in the Midwest reduced the flow of nectar in many flowers. Many bees may have starved. Dry weather in areas of the country could also be playing a part.
Wayne Esaias is a NASA space agency scientist who keeps bees in his free time. He lives in central Maryland, where he has found that flowers are blooming a month earlier than they did in 1970, which may be partly responsible for the disorder. Wayne Esaias is organizing a group of beekeepers to document nectar flow around the country.
小题1:The researchers found the virus ______.
| A．with the help of colony collapse disorder |
| B．by researching the causes of bee death |
| C．with the help of a map of honey bee genes |
| D．with the help of a scientist of NASA |
| A．American beekeeping industry has been strongly influenced by the bee disorder. |
| B．Studies are being carried out on the causes of the bee disorder, but questions remain. |
| C．How the causes of the bee disorder in U.S have been found. |
| D．The bee production in U.S is down because of Israeli acute paralysis virus. |
| A．Three. | B．Four. | C．Five. | D．Six. |
| A．Israeli acute paralysis virus should be responsible for the disorder |
| B．the solution to the bee disorder will be found eventually |
| C．American bees are more likely to defend themselves than Australian bees |
| D．the crop and plant production in U.S may be influenced by the bee disorder |
Sounds unusual, doesn"t it? But it"s not that unrealistic, with the development of China’s high—speed railway system. And that’s not all. China has an even greater high-speed railway plan—to connect the country with Southeast Asia, and eventually Eastern Europe.
China is negotiating to extend its own high·-speed railway network to up to 17 countries in 10 to 15 years, eventually reaching London and Singapore.
China has proposed three such projects. The first would possibly connect Kunming with Singapore via Vietnam and Malaysia. Another could start in Urumqi and go through Kazakhstan and Uzbekistan, and possibly to Germany. The third would start in the northeast and go north through Russia and then into Western Europe.
If China’s plan for the high-speed railway goes forward, people could zip over from London to Berlin in under two days.
The new system would still follow China’s high-speed railway standard. And the trains would be able to go 346 kilometers an hour, almost as fast as some airplanes.
China’s bullet train(高速客车),the one connecting Wuhan to Guangzhou, already has the World’s fastest average speed. It covers 1,069 kilometers in about three hours.
Of course, there are some technical challenges to overcome. There are so many issues that need to be settled, such as safety, rail gauge(轨距),maintenance of railway tracks. So, it’s important to pay attention to every detail.
But the key issue is really money. China is already spending hundreds of billions of yuan on domestic railway expansion.
China prefers that the other countries pay in natural resources rather than with capital investment. Resources from those countries could stream into China to sustain development.
It’ll be a win-win project. For other countries, the railway network will definitely create more opportunities for business, tourism and so on, not to mention the better communication among those countries.
For China, such a project would not only connect it with the rest of Asia and bring some much-needed resources, but would also help develop China’s far west. We foresee that in the coming decades, millions of people will migrate to the western regions, where the land is empty and resources unused. With high-speed trains, people will set up factories and business centers in the west once and for all. And they’11 trade with Central Asian and Eastern European countries.
小题1:China’s new high-speed railway plan will be a win-win project because .
| A．China will get much-needed resources and develop its western regions |
| B．China and the countries involved will benefit from the project in various ways |
| C．China will develop its railway system and communication with other countries |
| D．the foreign countries involved will develop their railway transportation, business and tourism |
| A．technical issues |
| B．safety of the system |
| C．financial problems |
| D．maintenance of railway tracks |
| A．Critical. | B．Reserved. | C．Doubtful | D．Positive. |
| A．New Railway Standards |
| B．Big Railway Dreams |
| C．High-speed Bullet Trains |
| D．International Railway Network |
最新试题
- 1如果分式：m-1m2+1的值为0，那么m=______．
- 2补写出下列名篇名句中的空缺部分。（任选3个小题）（6分）小题1: ，
- 3阅读下面的材料，根据要求写一篇不少于800字的文章。 哲学家维特根斯坦说：“我贴在地面步行，不在云端跳舞。”这句名言表
- 4下列电子式书写正确的是（ ）A．HClH+B．HClOC．H2O2D．Na2O2Na+
- 5入射光线与法线的夹角是30°，入射角为_________，反射光线与法线的夹角为_________ ，反射光线与入射光线
- 6—_____do you have a class meeting?— Once a week.A．How longB．
- 7在△ABC中，内角A，B，C所对的边分别是a，b，c．已知A=45°，a=6，b=32，则B的大小为（ ）A．30°B
- 8如图，AD=DF=FB，DE∥FG∥BC，则SⅠ∶SⅡ∶SⅢ=（ ）。
- 9【题文】下列各句中，标点符号使用正确的一项是（ ）（3分）A．
- 10汶川大地震中，某青年被埋在废墟中90多小时被武警战士救出，经检查，他小腿受伤，血液连续不断从伤口流出，中度脱水，血型B型
热门考点
- 1They often _________ blue dresses.A．put onB．inC．withD．wears
- 2下列物质在氧气中燃烧，能观察到白烟的是（ ）A．红磷B．硫磺C．铁丝D．木炭
- 3珠江三角洲地区的糖料作物和粮食作物分别是（ ）A．甜菜、水稻B．甘蔗、水稻C．甘蔗、小麦D．甜菜、小麦
- 4This kind of desk can be ______ to the height you need.A．add
- 52011年6月30日，_________高速铁路正式开通运营。此高铁是世界上一次建成线路里程最长、技术标准最高的告诉铁路
- 62012年我国就业形势依然严峻，经济增长减速对就业带来负面影响，就业难和招工难并存，结构性矛盾更为突出.促进高校毕业生任
- 7如图，已知O是直线AD上的点，三个角∠AOB、∠BOC、 ∠COD从小到大依次相差20度，则∠AOB=（ ）度。
- 8下边漫画给我们的启示是①企业应该把经济效益放在首位 ②需要培育文明风尚，建设和谐文化 ③国家要加强对文化市场的
- 9甲苯在一定条件下与氢气完全加成生成甲基环己烷,该产物与氯气发生取代反应,生成的一氯代物有A．3种B．4种C．5种D．6种
- 10某次数学测验中共有16道题目，评分办法：答对一道得6分，答错一道扣2分，不答得0分．某学生有一道题未答，那么这个同学至少