题目
题型：不详难度：来源：
The gene comes in two versions, one of which is found in 99 per cent of Europeans. The other is found in 93 to 100 per cent of Africans, researchers at Pennsylvania State University report in the latest issue of Science.
Scientists have changed the color of a dark-striped zebrafish（斑马鱼） to uniform gold by inserting a version of the pigment (色素) gene into a young fish. As with humans, zebrafish skin color is determined by pigment cells, which contain melanin (黑色素). The number, size and darkness of melanin per pigment cell determine skin color.
It appears that, like the golden zebrafish, light-skinned Europeans also have a mutation (变异) in the gene for melanin production. This results in less pigmented skin.
However, Keith Cheng, leader of the research team, points out that the mutation is different in human and zebrafish genes.
Humans acquired dark skin in Africa about 1.5 million years ago to protect bodies from ultra-violet rays of the sun (太阳光紫外线), which can cause skin cancer.
But when modern humans leave Africa to live in northern latitudes, they need more sunlight on their skin to produce vitamin D. So the related gene changes, according to Cheng.
Asians have the same version of the gene as Africans, so they probably acquired their light skin through the action of some other gene that affects skin color, said Cheng.
The new discovery could lead to medical treatments for skin cancer. It also could lead to research into ways to change skin color without damaging it like chemical treatment did on Michael Jackson.
小题1: The passage mainly tells us that ________.
| A．people can not change their skin color without any pain |
| B．the new discovery could lead to research into ways to change skin color safely |
| C．pop king Michael Jackson often changed his skin color as he liked |
| D．scientists have found out that people’s skin color is determined by the gene |
| A．nowadays people who want to change their skin color have to suffer a lot from the damage caused by the chemical treatment |
| B．Europeans and Africans have the same gene |
| C．the new discovery could help to find medical treatments for skin cancer |
| D．there are two kinds of genes |
| A．find the different genes of humans’ |
| B．prove the humans’ skin color is determined by the pigment gene |
| C．find out the reason why the Africans’ skin color is dark |
| D．find out the ways of changing people’s skin color |
| A．they are born light-skinned people |
| B．light-skinned Europeans have mutation in the gene for melanin production |
| C．they have fewer activities outside |
| D．they pay much attention to protecting their skin |
| A．neutral（中立的） | B．negative | C．positive | D．indifferent（冷漠） |
答案
小题1:D
小题1:A
小题1:B
小题1:B
小题1:C
解析
1. D 主旨大意题 根据全文讲述的主要内容得知：科学家们发现人的肤色是由基因决定的。
2. A 推理判断题 从文章最后一句话得知，人们改变肤色会象迈克尔·杰克逊那样受到化学药品对皮肤的伤害。
3. B 细节理解题 根据第三段得知，因为斑马鱼和人类一样肤色中含有黑色素，所以科学家们以此来证明之。
4 B 推理判断题 根据第四段得知，因为欧洲人体内黑色素的基因发生了变异，所以他们的皮肤为浅肤色。
5. C 推理判断题 根据作者对基因决定人的肤色的论述以及文章首尾段可知，作者对此的态度是肯定的。
核心考点
试题【Can people change their skin color without suffering like pop king Michael Jacks】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
The forum, held recently, was jointly organized by the Education Development Research Center of the Ministry of Education in China and the Postgraduate School of the University of Pennsylvania in the US. It aims to find out similarities and differences that exist between two countries in their educational system.
While some educationists in China keep a doubtful eye to the country’s educational system in recent years. Their American counterparts give a positive answer to the basic education in China, saying that it is still one of the best in the world.
An American educationist told reporters that the basic education in the US was criticized in recent years due to its political tendency. On the contrary, Chinese government’s stress on basic education and qualified teachers has set a good example.
At primary and middle school, pupils in China did better in math and science lessons than the US pupils. However, few grow to be world “masters”. Why? Educationists attributed this to China’s stress on examination rather than students’ interest.
Deputy Director of the postgraduate school of Pennsylvania University said American teachers encouraged students to focus on their strong points. In China, students are driven to study to pass the entrance examination test and they do not pay much attention to their own interest.
At the forum, director of the Education Development Research Center Mr. Zhang said in the future, the research center would make its middle and long-term basic education strategy by taking some references from other countries including the US.
He also revealed that for a long time in the future, China would make a breakthrough in setting the policy for quality education.
小题1:This passage is mainly about _________.
| A．quality education development in the future |
| B．why China’s education cultivates few world masters |
| C．China’s good basic education |
| D．genius education at the primary stage |
| A．famous | B．active | C．qualified | D．experienced |
| A．basic education in the US is associated with the government’s political interest. |
| B．the forum aims to find out the reason why there few world masters in China. |
| C．all the educationists in China cast doubts in the country’s educational system. |
| D．Chinese government’s stress on basic education is spoken highly of. |
| A．The US government spends more money on basic education |
| B．American pupils are cleverer than Chinese pupils |
| C．basic education in China is not as successful as that of the US |
| D．Chinese people pay less attention to students’ interest |
| A．help students to study even harder to pass the examination |
| B．apply more attention to quality education referring to systems of other countries |
| C．allow students to pay more attention to their own interest without their test results |
| D．copy the educational system in the US |
Travelers to new cities are often told to start their trip with a bus tour. The thinking is that they can then ____1____ to the places that interested them. Nonsense! What you see from the____2____ of a moving bus is unreal and completely removed from the authentic sights, sounds and ____3____ outside.
Be adventurous! The best way to experience any place is ____4____ and with absolutely no travel ____5____. Simply go wherever your feet and your ____6____ lead you. You eventually will get to the same sites that are on the bus tour - the museums, the monuments city hall- but will have ____7____ much more. You will have felt the contemporary life of the city.
“But what if I get lost?” People might ask. No one gets ____8____ lost in a major city. Eventually, you can find your way back to a well-known location. If it frightens you to be “lost”, just find a taxi and go back to where you____9____. However, the nicest things can happen if you get lost. You stop at a sidewalk café to ____10____ and relax. You ask instructions of the local people at the ____11____ table. And even if they don’t speak your language, your trip becomes more ____12____ because of the experience.
So next time you see a poster advertising an introductory bus tour, ____13____ your money. Instead, wander on your own. I ____15____ you a time you’ll remember with great pleasure.
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In recent years, IP rights have been the focus of a great deal of discussion because of a technology which looks set to weaken them altogether: the Internet. Many years ago, if you wanted a recoding of a song, you would have to purchase it from a music store; if a novel, from a book store. In those days, IP rights were easily protected since it was very difficult to obtain intellectual property without paying for it. However, a lot of IP, including songs, films, books and artwork, can be downloaded today free of charge using the internet. This practice has now taken the world by storm, dramatically affecting the way in which we view IP rights.
小题1:According to the writer, in the beginning, IP rights were mainly of use to _______.
| A．those creating music, art and literature |
| B．novelists |
| C．those not receiving financial reward for their work |
| D．engineers and inventors |
| A．It does not affect the way we understand IP rights. |
| B．It sells songs and films. |
| C．It makes IP rights harder to protect. |
| D．It prevents the production of artwork. |
| A．Intellectual property rights. | B．Free downloading. |
| C．The Internet. | D．The large number of songs, films and books. |
| A．IP Rights and Our Attitudes | B．Ways to Protect Your IP Rights |
| C．The Present and the Future of IP rights | D．A History of IP Rights |
While China may be the world’s biggest toymaker, many of the best are exported . Department stores here do not have enough high quality toys. It is said that the demand for educational toys is low.
A US company, BabyCare, is trying to change that with a new way to sell toys in China.
BabyCare works basically together with doctors in Beijing hospitals. People who join the company’s "mother club"can get lectures and newsletters on baby and child development at no extra cost, if they agree to spend 18 dollars a month on the company’s educational toys and childcare books.
"We want to build a sevenyear relationship with those people," said Matthew J. Estes, BabyCare’s president. "It starts during pregnancy , when the anxiety and needs are highest." BabyCare works on a onetoone basis. Doctors, nurses, and teachers paid by BabyCare advise parents, explain toys that are designed for children at each stage of development to age six.
BabyCare opened its first store in China last June in a shopping center in central Beijing and another near Beijing Zoo. It plans to have 80 stores in China within six years.
It is a new model for China and develops a market in young children’s education and health that no other companies are in.
小题1:What do the first two paragraphs mainly tell us?
| A．Educational toys and foreign toy markets. |
| B．Problems with China’s toy market and education. |
| C．Reasons for pushing sales of educational toys in China. |
| D．Baby population and various kinds of toys made in China. |
| A．Club members buy BabyCare products for free childcare advice. |
| B．Doctors in Beijing help in making BabyCare products. |
| C．Parents are encouraged to pay $ 18 for club activities. |
| D．BabyCare trains Chinese doctors at no extra cost. |
| A．opening stores in Beijing hospitals |
| B．offering 18month courses on childcare |
| C．setting up children’s education centers |
| D．forming close relationships with parents |
| A．Mother’s Club in China. | B．BabyCare and Doctors. |
| C．American Company Model. | D．Educational Toys in China |
We are good listeners in our own language because we have had years of practice. We understand the grammar and the language. We know what to expect a person to say to us in almost any situation. We have been in similar situations many times, and we have heard it all before. We can understand it, even if we do not listen carefully.
But this is not true with a foreign language. We must listen with our full attention. And we must try not to let the cultural style of our language affect our understanding of the foreign language. Listening to a foreign language broadcast is easier if we know something about it. There are clues that can help us. One clue is the time of a day. Morning programs usually contain many short items of news, information or entertainment. The items are short because most of us are getting ready to go to work in the morning. Often we do not have time to listen to long programs. Evening programs are different. There is time for more details about the subjects discussed.
We can get a clue about the program from the music at the beginning, but we must be familiar with the music of the foreign culture. The kind of music—serious and slow, or fast and light—can tell us what kind of program to expect. The name of the program can give us good information about what it will contain.
Another good clue is the broadcaster. The more we listen to the same person, the easier it will be to understand him. His speaking style will become familiar to us. Further, the broadcaster provides clues to the organization of the broadcast at the beginning of the program. The broadcaster usually gives us the highlights of the program to prepare us for the details that will follow.
小题1:We are good listeners in our own language because ________.
| A．we have a natural ability of learning language | B．our own language is much easier |
| C．we listen to our own language more carefully | D．we have practiced it for years |
| A．evening programs | B．programs with soft music |
| C．morning programs | D．familiar programs |
| A．its music | B．the broadcaster |
| C．its name | D．the time of the program |
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