题目
题型：不详难度：来源：
Plants, like animals, are subject to diseases of various kinds．It has been estimated that some 30,000 different diseases attack our economic plants; forty are known to attack corn, and about as many attack wheat．The results of unchecked plant disease are all too obvious in countries which have marginal food supplies．The problem will soon be more widespread as the population of the world increases at its frightening rate．Even in countries which are now amply fed by their agricultural products there could soon be the major crops; the resulting famines(饥荒) could kill millions of people, and the resulting hardship on other millions could cause political upheavals(动乱) disastrous to the order of the world．
Some plants have relative immunity to a great many diseases, while others have a susceptibility to them．A blight (萎菌病) may be but a local infection easily controlled; on the other hand it can attack particular plants in a whole region or nation．An example is the blight which killed virtually every chestnut tree in North America．Another is the famous potato blight in Ireland in the last century．As a result of that, it was estimated that one million people died of starvation and related ailments．
Plant pathologists have made remarkable strides in identifying the pathogens of the various diseases．Bacteria may invade a plant through an infestation of insect parasites carrying the pathogen．A plant can also be inoculated by man．Other diseases might be caused by fungus which attacks the plant in the form of a model or smut or rust．Frequently such a primary infection will weaken the plant so that a secondary infection may result form its lack of tolerance．The symptoms(症状) shown may cause an error in diagnosis, so that treatment may be directed toward bacteria(细菌) which could be the result of a susceptibility caused by a primary virus infection．
小题1:How many diseases are known to attack wheat?
| A．Around 30000 | B．Forty |
| C．Around 29960 | D．Around 40 |
| A．food shortages in poor country | B．food shortages in rich country |
| C．increase of world population | D．disaster in world politics |
| A．Some plants have relative immunity to a great many diseases． |
| B．Some other plants have a susceptibility to a great many diseases． |
| C．The tolerance of a particular plant changes as the growing conditions change． |
| D．A blight can be a national infection． |
| A．infect people |
| B．be prevented by inoculation（接种疫苗） |
| C．be prevented by killing insects |
| D．be prevented by improving the growing conditions |
| A．Fungus | B．Mold | C．Smut | D．Rust |
答案
小题1:D
小题2:C
小题3:C
小题4:B
小题5:A
解析
小题1:
小题2:
小题3:
小题4:
小题5:
核心考点
试题【Plants, like animals, are subject to diseases of various kinds．It has been estim】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
Organic foods are produced according to certain production standards, meaning they are grown without the use of conventional pesticides, or chemical fertilizers and that they were processed without food additives. Livestock are raised without the routine use of antibiotics（抗生素）or growth hormones. In most countries, organic produce must not be genetically modified. They may also be required to be produced using energy-saving technologies and packaged using recyclable materials when possible.
Early consumers interested in organic food would look for non-chemically treated, fresh or minimally processed food.
They mostly had to buy directly from growers: “Know your farmer, know your food” was the motto. Personal definitions of what constituted ( 组成)“organic” were developed through first-hand experience: by talking to farmers, seeing farm conditions, and farming activities. Historically, organic farms were relatively small family-run farms — which is why organic food was once only available in small stores or farmers’ markets.
However, since the early 1990s organic food has had growth rates of around 20% a year. As of April 2008, organic food accounts for 1 - 2% of food sales worldwide. Currently organic food production is legally regulated. Many countries require producers to obtain organic certification in order to market food as organic.
Several studies have attempted to examine and compare conventional and organic systems of farming. The general consensus（共同看法）is that, in the short term, organic farming is less damaging for the following reasons:
● Organic farms do not release synthetic pesticides (合成农药) into the environment — some of which have the potential to harm soil, water and local wildlife.
● Organic farms are better than conventional farms at keeping diverse ecosystems, i.e., populations of plants and insects, as well as animals.
● Organic farms are more energy efficient and produce less waste.
Another report published in March 2008 by The Organic Center claims that organic food is on average 25% more nutritious than conventional food.
However, many critics believe that the increased land needed to farm organic food could potentially destroy the rainforests and wipe out many ecosystems. And organic products cost 10 to 40% more than similar conventionally produced products. Processed organic foods in supermarkets are 65% more expensive.
1. Early consumers knew what food was “organic” by _______.
A. firsthand experience B. the “certified organic” label tag
C. its packaging D. examining its organic certification
2. We can infer that _______.
A. in America, organic food can only be bought in small stores or farmers’ markets
B. organic food is also available in large supermarkets at present
C. organic food is produced by large-scale farms
D. organic food is often beautifully packaged
3. According to the passage, organic food is considered as _______.
A. junk food B. delicious snacks C. green food D. conventional food
4. What is the main idea of the last paragraph?
A. The benefits of organic food. B. The cost of organic food.
C. The disadvantages of organic food. D. Organic food and conventional food.
5. Which of the following statements does NOT support the view that organic farming is more environment-friendly?
A. Organic food is generally thought to be more nutritious.
B. Organic farms are more energy efficient and produce less waste.
C. Organic farms are better than conventional farms at maintaining varieties of plants, insects and animals.
D. Organic farms do not release synthetic pesticides into the environment.
Findings from a new study were presented at a recent meeting of the American Psychosomatic Society. Researchers in the United States studied one hundred thousand women during an eight-year period, beginning in nineteen ninety-four. All of the women were fifty years of age or older. The study was part of the Women’s Health Initiative organized by the National Institutes of Health.
The women were asked questions that measured their beliefs or ideas about the future. The researchers identified each woman’s personality eight years after gathering the information.
The study found that hopeful individuals were fourteen percent less likely than other women to have died from any cause. The hopeful women were also thirty percent less likely to have died from heart disease after the eight years.
Hilary Tindle from the University of Pittsburgh School of Medicine in Pennsylvania was the lead author of the report. She said the study confirmed earlier research that linked optimistic feelings to longer life.
The researchers also gathered information about people’s education, financial earnings, physical activity and use of alcohol or cigarettes. Independent of those things, the findings still showed that optimists had less of a chance of dying during the eight-year period.
Some women who answered the questions were found to be cynically hostile, or highly untrusting of others. These women were sixteen percent more likely to die than the others. They also were twenty-three percent more likely to die of cancer.
The study also found that women who were not optimistic were more likely to smoke and have high blood pressure or diabetes. They were also more likely not to exercise.
Professor Tindle says the study did not confirm whether optimism leads to healthier choices, or if it actually affects a person’s physical health. She also says the study does not prove that negative emotions or distrust lead to bad health effects and shorter life. Yet there does appear to be a link that calls for more research.
1. What’s the purpose of carrying out the study?
A. To gather information for the National Institutes of Health.
B. To find out the relationship between women’s personality and their health.
C. To decide who is more likely to enjoy happier life.
D. To identify each woman’s personality 8 years after gathering the information.
2. What can be inferred from the passage?
A. It’s uncertain whether optimism affects a person’s physical health.
B. Negative emotions do cause shorter life.
C. The connection between personality and health has been established.
D. The more optimistic you are, the longer life you may enjoy.
3. According to the passage, who is more likely to die of cancer?
A. A woman who has high blood pressure or diabetes.
B. A woman who doesn’t exercise.
C. A woman who has poor physical health.
D. A woman who always doubts what others say.
4. Which of the following is true?
A. American Psychosomatic Society organized the new study.
B. Women who were optimistic were less likely to smoke.
C. More questions were given than those measuring women’s beliefs or ideas.
D. Hopeful women were 16% less likely to die from heart disease.
第二部分：阅读理解（共20小题;每小题2.5分，满分50分）
阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。
Proper arrangement of classroom space is important to encouraging interaction. Most of us have noticed how important physical setting is to efficiency and comfort in our work. College classroom space should be designed to encourage the activity of critical thinking.
We have entered the 21st century, but step into almost any college classroom and you step back in time at least a hundred years. Desks are normally in straight rows, so students can clearly see the teacher but not all their classmates. The message behind such an arrangement is obvious. Everything of importance comes from the teacher.
With a little imagination and effort, unless desks are fixed to the floor, the teacher can correct this situation and create space that encourage interchange among students. In small or standard-size classes, chairs, desks, and tables can be arranged in a variety of ways. The primary goal should be for everyone to be able to see everyone else. Large classes, particularly those held in lecture halls, unfortunately, allow much less flexibility.
Arrangement of the classroom should also make it easy to divide students into small groups for discussion or problem-solving exercises. Small classes with movable desks and tables present no problem. Even in large lecture halls, it is possible for students to turn around and form groups of four to six. Breaking a class into small groups provides more opportunities for students to interact with each other, think out loud, and see how other students’ thinking processes operate all essential elements in developing new modes of critical thinking.
In courses that regularly use a small group format, students might be asked to stay in the same small groups throughout the course. A colleague of mine, John, allows students to move around during the first two weeks, until they find a group they are comfortable with. John then asks them to stay in the same seat, with the same group, from that time on. This not only creates a comfortable setting for interaction but helps him learn students’ names and faces.
1. The primary purpose of desk rearrangement is _______.
A. for the teacher to divide students into small groups.
B. to make it possible for students to interact with each other.
C. for the teacher to find out how students think.
D. to give students more opportunities to practice speaking.
2. The expression “step back in time at least a hundred years” in Paragraph 2 is intended to convey the idea that _______.
A. there is not much change in educational idea over the past hundred years
B. critical thinking was encouraged even a century ago
C. college classrooms often remind people of their college life
D. a hundred years ago, desk arrangement in a classroom was quite different
3. The greatest advantage in allowing each student to find his own group might be that________
A. learning is made comfortable in this way
B. the teacher can easily remember students’ names and faces
C. the teacher saves the trouble in doing that
D. brighter students can help slower ones.
4. It is implied in the passage that ______.
A. students are allowed to changed groups throughout the course in John’s class
B. classroom interaction between students is essential to the teachers
C. a comfortable environment leads to higher working efficiency
D. new kinds of desks and chairs should be made
5. The author mentioned John in the last paragraph in order to ________
A. create a comfortable setting for interaction
B. introduce an approach of learning students’ names and faces easily
C. give an example that students stay in the same seat throughout the course.
D. describe a good seat-arrangement mode in courses with small group format.
The best way to improve your reading ability is, of course, to read. The student must make a real effort to improve his speed, and if necessary his comprehension, with each exercise. Too many students read passages passively（被动的） and without judgment: they simply start at the first word and read through to the end. You should read a passage actively, selectively（选择地） and purposely. You must believe that you indeed have the ability to read faster and understand, and that you will.
Reading, like everything else in life, is best done when you’re relaxed. The key to improve it is concentration. You must be willing to break some old habits and form new ones. Extra body movement, such as turning the head from side to side, pointing at the line with a finger or pencil, or moving the lips, should be stopped immediately. Reading is mostly a mental process(大脑活动过程) and body movement helps neither speed nor comprehension. Then you should see words as part of a whole sentence or paragraph, not just in isolation(孤立), This is why a slow, word-by-word student often understands far less, or misses much of the joy and excitement of reading.
The student must learn to improve reading skills on their own, and not just when a teacher is looking over his shoulder. Reading improvement takes discipline（纪律） and effort. Don’t give up.
1. According to the author, how should we not read a passage?
A. actively B passively. C. purposely D. selectively
2. You may conclude that whether you can improve your reading depends on________.
A. your attitude B. your good habits of reading
C. discipline D. all of the above
3. Which of the following is true according to the passage?
A. When reading, you’d better point at the line with a pencil.
B. When reading, you should turn your head from side to side.
C. When reading, you should pay attention to basic unit of meaning, that is a phrase or sentence that contains an idea.
D. Body movement will help you to improve reading.
4. The best title for this passage is___________.
A. Reading Faster B. Understanding Better
C. How to Improve Your Reading D. Don’t Give Up
It was reported today that in China, 56% of people who write blogs(博客) do so as a personal diary and 83% use their blogs for sending messages to friends. It was also found that there is a strong East- West difference. In places like the US, blogs that offer information on news attract more readers but in China, blogs are more likely to be about sharing personal feelings.
It seems that bloggers can be divided into three types: IT(信息技术) bloggers, bloggers who record their ordinary feelings and media（媒体） bloggers.
When blogging first started, the IT people had the technological advantage and they took the chance to put their thoughts on the web. Some of these IT people now have had over a million people read their blogs.
The next wave of bloggers did not have any training as writers or in IT and wrote about normal daily life. Media bloggers, however, are trained writers, such as journalists and editors. When the many media bloggers showed up, the everyday bloggers lost most of their readers. Media bloggers have the advantage of knowing how to communicate well through the written words.
However, the normal bloggers are still out there and increasing in number. It seems that blogging is the new way to express your feelings. People feel like the world is listening to, or rather reading, their problems, even if they are not.
1. From the passage we know that________.
A.56% of the Chinese write blogs
B. people in US like to read blogs for news
C. the Chinese share feelings with each other mainly through blogs
D. the way that Chinese use blogs is not different from the West
2. ________wrote more blogs at the very beginning and now have more readers than others.
A.IT bloggers B. Media bloggers C. Normal bloggers D. US bloggers
3. Which of the following is true according to the passage?
A. There will be more and more normal bloggers.
B. Only bloggers express their feelings through the Internet.
C. All people in the world are listening to the bloggers’ voice.
D. Media bloggers have more readers because of their popularity.
4.The underlined expression in the passage can be best replaced by “________”.
A. increased. B. appeared . C. arrived. D. grew.
最新试题
- 1在地球表面，陆地所占面积最大的半球是[ ]A、东半球 B、西半球 C、南半球 D、北半球
- 2如图所示，该装置可以作为火灾报警器使用：U形试管竖直放置，左端封闭、右端开口，装入一小段水银柱封闭一定质量的理想气体，试
- 3用括号内所给单词的适当形式填空。1. Is there _______ (somewhere) you want to
- 41922年，苏俄农民瓦西里在交纳了粮食税后，把余粮运到不远处的集市上出售，当地官员没收了他的余粮，并处以巨额罚款。
- 5“烂板液”是制印刷锌板时，用稀HNO3腐蚀锌板后得到的废液，主要含Zn(NO3)2和由自来水带进的Cl-、Fe3+等杂质
- 6蝗虫的发育要经历卵、若虫、成虫三个时期，若虫与成虫的区别主要表现在（ ）A．若虫身体较小，生殖器官没有成熟B．若虫身体
- 7已知x，y满足条件x≥1x-2y+3≥0y≥x
- 8The answer ________ the teacher,she asked the little boy to
- 9There is no excuse for not doing your assignments（作业）. If yo
- 10如图，A、B两地之间是一座山，现准备修一条隧道，在A地测得隧道北偏东51°，如果A、B两地同时开工，那么在B地应按___
热门考点
- 1下列物质的主要成分属于有机高分子材料的是[ ]A ．玻璃B ．陶瓷C ．塑料D ．钢材
- 2求以为直径两端点的圆的一般方程.
- 3下列关于遗传病的叙述中，错误的是[ ]A．由遗传物质引起，可以遗传给后代 B．由致病基因造成的，可以遗传给后代
- 4人们到医院检查身体时，其中有一项就是做胸透，我们可以把做胸透的原理等效如下：如图所示，P是一个放射源，从开口处在纸面内向
- 5音乐是生活中的一股清泉，好的音乐能陶冶情操。我国很早就形成了音乐教育制度，这种制度形成于A．夏朝B．商朝C．西周D．东周
- 6（1）北京是文化古城，历史遗留建筑很多，严重阻碍了北京的发展，应坚决拆掉。[ ]（2）今天的北京城已一改过去的旧
- 7实验室常用下列装置来制取气体：（1）写出图中有标号仪器的名称：a___________、b_____________。（
- 8请你结合以下时政材料，自拟题目，运用所学知识进行多角度评论。●2011年6月30日，十一届全国人大常委会第二十一次会议表
- 9如图所示，一质量为的小球，用一根长为的细绳悬挂于点，在正下方处有一钉子。将小球拉到处后释放，当它摆到最低点时，悬线被钉子
- 10据说，美国研制出一种用超声波做子弹的枪．当超声波达到一定强度时就能有较强的攻击力．实际要阻挡这一武器的袭击，只要用薄薄的