题目
题型:不详难度:来源:
Sample inspections conducted on Tuesday found low levels of radioactive iodine in spinach( a kind of green vegetables) planted in Beijing, Tianjin and Henan province --- about 1-3 becquerels per kilogram (Bq/kg), the statement said.
"The contamination level detected is too low to be harmful to public health," it said.
According to health experts, radioactive iodine can accumulate in humans once ingested in high concentrations and increases the risk of thyroid cancer. But it decays naturally within weeks.
Leafy vegetables grown in the open like spinach, lettuce and leek are among the first foods to be tainted by radioactive deposits.
Raw milk is also susceptible to radioactive contamination as livestock feed on grass.
Tests carried out in March showed spinach and milk taken from farms near Japan"s nuclear-stricken area had exceeded(go beyond) government-set safety limits for radiation.
No cases of tainted water or milk have been reported in China but the ministry vowed to further strengthen monitoring.
Wang Zhongwen, a researcher at the China Institute of Atomic Energy"s radiation safety department, told China Daily on Wednesday that currently China only had the means to conduct food radiation tests in a few regions.
The statement also said that recent rain in Beijing and Tianjin meant radioactive substances could have fallen on vegetables.
Chen Jicang, a vegetable dealer in Beijing, said on Wednesday that concerns are growing among consumers, businesses and governments across the world.
"We have yet to see any impact on our business from the radiation, but we will keep a close eye on how the issue develops," he said.
He added that most vegetables consumed in Beijing are produced locally, and he might switch to other varieties if spinach sales suffer.
Yang Guoshan, a researcher of radiation medical science at the Academy of Military Medical Sciences, said people could safely eat products that contain low levels of Iodine-131.
"The radiation level is so low that residents don"t need to spend any extra effort on cleaning them," he said.
Gao Jie, a 52-year-old resident in Tianjin said she is deeply worried because spinach is a staple part of her family"s diet.
"If spinach is radioactive, is there any possibility that other types of vegetables are safe?"
Trace levels of radioactive isotope cesium-137 and -134 were detected in the air in 21 provinces and regions on Wednesday, up from 17 on Tuesday, according to China"s National Nuclear Emergency Coordination Committee.
小题1: What does the underlined word mean in para 1?
A.protected | B.contained | C.polluted by dangerous substances | D.tested |
A.Because tests have been carried out there. |
B.Raw milk is sensitive to radioactive contamination as livestock(家畜)feed on grass. |
C.The amount of radioactive substances goes beyond the safe limits for radiation. |
D.Japan is a nuclear-stricken area. |
A.a magazine | B.CCTV news | C.a journal | D.a novel |
A.Consumers became concerned about the safety of vegetables. |
B.People need to clean vegetables completely before cooking because of radiation. |
C.Food and water have to be tested since the end of March in 14 mainland regions |
D.Low levels of radioactive iodine has been found in spinach in Tianjin |
A.How the radioactivity came into being |
B.What we should do in face of radioactivity. |
C.Radioactivity has no side effect on human being. |
D.Home-grown food has been affected by radioactivity. |
答案
解析
核心考点
试题【It is the first report that home-grown food has been contaminated by radioactivi】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
This was the conclusion of a team of scientists from China"s State Forestry Administration and the World Nature Fund.
The South China tiger, also known as the Chinese tiger, is native to southern China.In the 1950"s, there were over 4000 tigers found in mountain forests in the country.But due to the destruction of their natural habitat and uncontrolled hunting, it has been pushed on to the list of the world"s top ten most endangered species.
Sixty-six of the big cats can be found in the cages of a dozen zoos around China.But they are nothing like their wild cousins.They have lost their natural skills such as hunting and killing.If they were set free they could not look after themselves.
"Breeding has damaged the quality of the species", said Pei Enle, deputy director of the Shanghai Zoo.
To reintroduce the species into the wild, the country started a programme to send five to ten young tigers to South Africa.Four of them have already arrived.Progress has been made as two elder tigers have recovered some of their instincts(本能)and can hunt wild animals by themselves at the African base.
" South Africans are very experienced in reintroducing big animals to the wild.The country has very good natural conditions for the tigers to learn in", said Lu Jun, office director of the National Wildlife Research and Development Center." We tried in Fujian Province, but it was not successful as there was not a complete eco-chain(生物链) and there was a lack of space."
The tigers should return to China in 2007 when the reservations in Fujian are ready.
1.What is the main reason for the South China tiger becoming one of the world"s top ten most endangered species?
A.Because it has lost its natural instincts. B.Because there is not a complete eco-chain.
C.Because there is no space for it. D.Because uncontrolled hunting has destroyed its natural living conditions.
2.How is the programme of sending several tigers to South Africa getting on?
A.Its effect still remains to be seen.
B.Two tigers can already compete with their wild cousins.
C.Some of the tigers are already on the road to recovering their natural skills.
D.The tigers should be able to recover their instincts completely by 2007.
3.By saying " but they are nothing like their wild cousins", the writer means that ______.
A.they are no longer feared by other wild animals
B.they don"t know how to hunt or kill
C.a complete change has resulted in the species because of breeding
D.to reintroduce them into the wild has become an urgent task
4.What is the purpose of sending young tigers to South Africa?
A.To help the tigers recover their ability to live in the wild.
B.To provide them with a better environment.
C.To get the tigers to go on a tour.
D.To find a complete eco-chain for them.
5.Which one is not the reason for South Africa being chosen as the training place?
A.Because the tigers can hunt wild animals by themselves at the African base.
B.Because South Africans are skilled at dealing with the tigers.
C.Because there is a complete eco-chain and enough space there.
D.Because the country has good natural conditions for the tigers to learn in.
Taobao,China’s largest online shopping site,has become an important part of Wang Lin’s life.She spends lots of money on Taobao.
A growing number of Chinese Internet users like Wang have found the joys of online shopping .Most online shoppers are students or young workers .More women shop on line than men.Clothes and home-use products are the most popular on line.
It was reported that more than 250 billion yuan was spent on online shopping last year, 80% through Taobao.
Taobao means “looking for treasure”in Chinese.People can find almost everything they need on Taobao,from clothes to books ,from candies to DVD players .
You may question the security of online shopping ,Wang Lin said, “”It’s very safe and convenient .Unless you receive the products from the sellers and are satisfied with them,the shop owner will not get the money .You can also get your money back if you want to return the products.”
小题1:What are the most popular on line?
A.Candles and DVD players | B.Clothes and books. |
C.Clothing and home-use products. | D.Toys for children |
A.a shopping mall | B.an online shopper |
C.an online shopping site | D.a clothes store |
A.质量 B安全 C 信誉 D. 数量
小题4:.Which is the best title of the passage?
A.Wang Lin’s life. | B.Online shopping in China. |
C.Shopping on line is not safe. | D.Shopping on line is easy |
Genetically engineered food Many crops are already genetically engineered, often to produce more food, fight against pests or improve nutrition. But concern is growing over the lasting effects of changing nature. While existing research has found little harm in genetic engineering, a recent study found the flower powder of a genetically engineered corn can kill the normal butterfly. This finding made many people nervous and brought attention to the topic.
Dining out Americans are increasingly eating meals away from home, both in sit-down restaurants and in fast food outlets. In the last decade alone there was a 14 percent decrease in the number of meals eaten at home. At the same time, restaurants are just beginning to really open their doors on the Internet. Websites exist to make restaurant reservations (预约), view menus, and get tips from your favorite chefs. The dining out trend and the demand for high-quality, chef-prepared food have encouraged chefs to spend time out of the kitchen — teaching classes, appearing on TV, and writing cookbooks.
Eating in Eating in doesn’t always mean cooking. Ready-made meals and frozen food sold in supermarkets taste better all the time. Restaurants are offering neatly packaged “food to go”, and meals can be ordered over the Internet. Cooking is not as much as a necessity, as it is a hobby or a special treat.
Agriculture Although American farmers have been hit hard recently by bad weather, low prices and decreasing government help, they can increase grain production not using old farming methods.
小题1:Which of the following is the main reason for genetically engineered crops?
A.To lead to more food and better nutrition. | B.To kill the normal butterfly. |
C.To reduce the harm done by insects. | D.To change the nature of the crops. |
A.eating out is not popular among the old people in USA |
B.it is now easier for people to get information about eating out |
C.it is popular for restaurants to send out information on the Internet |
D.the trend of eating out is causing many chefs to give up their jobs |
A.still be the job of most housewives |
B.take up most of people’s free time |
C.bring much joy to more people |
D.lead to many restaurants closing down |
A.turn to better farming methods | B.ask for the support of the government |
C.raise the prices of crops | D.not care about the effects of bad weather |
Fifty years ago, nature study was not part of the school work; scientific forestry was a new idea; wood was still cheap because it could be brought in any quantity from distant woodlands; soil destruction and river floods were not national problems; nobody had yet studied long-term climatic cycles in relation to proper land use; even the word “conservation” had nothing of the meaning that it has for us today.
For the sake of ourselves and those who will come after us, we must now set about correcting the mistakes of our forefathers. Conservation should be made part of everybody’s daily life. To know about the water table in ground is just as important to us as a knowledge of the basic math formulas. We need to know why all watersheds (上游集水区) need the protection of plant life and why the running current of streams and rivers must be made to give their full benefit to the soil before they finally escape to the sea. We need to be taught the duty of planting trees as well as of cutting them. We need to know the importance of big, grown trees, because living space for most of man’s fellow creatures on this planet is figured not only in square measure of surface but also in cubic (立方体的) volume above the earth. In a word, it should be our goal to restore as much of the original beauty of nature as we can.
小题1:The author’s attitude towards the use of natural resources is _________.
A.positive | B.uninterested | C.optimistic | D.critical |
A.they had no idea about scientific forestry |
B.they had little or no sense of environmental protection |
C.they were not aware of the importance of nature study |
D.they had no idea of how to make good use of raw materials |
A.we plant more trees |
B.natural sciences be taught to everybody |
C.environmental education be directed toward everyone |
D.we return to nature |
A.Our living space on the earth is getting smaller and smaller. |
B.Our living space should be measured in cubic volume. |
C.We need to take some measures to protect space. |
D.We must preserve good living conditions for both birds and animals. |
Does this affect intelligence? In traditional education, intelligence is measured by cognitive ability. Some people can easily produce everything they know on a test. But others are awarded with poor grades and considered inferior. But does this inability make them any less intelligent? If the question came up on a task, they could refer to a book or a quick Google search. In reality they’re just as effective as the people that ace a test. They just can’t prove it as easily.
Metacognition is more important to success than cognition. A person with poor cognitive ability, but great metacognitive ability might do poorly in school, but when faced with a challenge, they understand their abilities and take the best course of action. For example, when faced with a question, a person with strong metacognitive ability will deal with it like this. If he knows the answer, but can’t come up with it, he can always do a bit of research. If he knows for sure that he doesn’t know, then he can start educating himself. Because he’s aware of his ignorance, he doesn’t act with foolish confidence. These people might not seem intelligent at first glance, but because they know what they know, they make better decisions and learn the most important things.
However, people with great cognitive ability but poor metacognitive ability may be considered excellent at a young age for acing every test and getting great SAT scores. Unfortunately, they’ve been ruined by poor metacognition: they think they know everything but they really don’t. They are overconfident, fail to learn from mistakes, and don’t understand the slight differences of personal relationships, showing disregard for persons with lower cognitive ability. They may make the worst decisions.
The most important mental power is the ability to know what you don’t know. The recognition of a fault is the first step to improvement. Don’t try to hide a lack of knowledge. For intelligent people this is the toughest lesson to learn.
小题1:People with great cognitive ability tend to _________.
A.do well in tests | B.be considered inferior |
C.be more effective than others | D.do research when faced with a task |
A.starting educating himself | B.taking action during the course |
C.making the right decision | D.coming up with many ideas |
A.lack basic moral values | B.have improper self-evaluation |
C.fail to communicate with others | D.show little respect for others |
A.intelligence is measured by cognitive ability |
B.cognition is the most important mental power |
C.the toughest lesson is to distinguish the two types of cognition |
D.the awareness of one’s ignorance contributes to one’s improvement |
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