题目
题型：云南省模拟题难度：来源：
say natural chemicals found in red wine appear to protect against blocked blood vessels(血管). The
chemical substances are called poly-phenols(多酚). They come from the outer covering of grapes. They
are not present in other alcoholic drinks.
Researchers say their discovery explains why many people in southern Europe can eat fatty foods and
still have a low risk of heart disease. People in France, for example, have lower rates of heart disease
than Americans do. Yet the traditional French diet includes butter, cheese and other foods high in
cholesterol(胆固醇). This led the British scientists to examine another important part of the French
diet - red wine. Several earlier studies have suggested that people who drink proper amounts of alcohol
may reduce their risk of heart disease.
The British team experimented with cells from the blood vessels of cows. The scientists studied the
effects of twenty-three kinds of red wine on the cow cells. They found that poly-phenols from all of the
red wines stopped production of a protein called endothelin(内皮素). This protein causes blood vessels
to become smaller. Scientists believe endothelin is linked to hardening of the blood vessels, which is a
cause of heart disease.
The scientists found that the decrease in endothelin levels was linked to the amount of poly-phenols in
the wines. The British team performed similar experiments with two other kinds of wine, white and rose.
These wines contain little or no poly-phenols because the grape skins are removed before the wine is
made. White and rose wines had no effect on endothelin levels.
The scientists also studied the effect of non-alcoholic juice made from red grapes. They found that
grape juice slowed the production of endothelin, but was much less effective than the red wines.
1. So far as grapes are concerned, is more effective on reducing the risk of heart disease.
A. the outer part of grapes
B. the inner part of grapes
C. the seeds of grapes
D. the juice in grapes
2. What made the British scientists study another important part of the French diet?
A. Traditional French diet.
B. Lower risk of heart disease of the French.
C. The reason why people drink wine.
D. Poly-phenols not existing in other things.
3. From this passage, we may know people"s health is linked to .
A. diet habits
B. their genes
C. their education
D. living surroundings
4. What"s the best title for this passage?
A. A Healthy Diet
B. Protecting Your Heart
C. Red Wine and Health
D. A Study on Health
答案
核心考点
试题【阅读理解 British scientists may have discovered the reason why red wine appears 】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
with a single hump from the dry desert, and the Bactrian camel with two humps from Centraland East
Asia. Camels are over 7 feet tall and weigh over 1,600 pounds. They will live up to 40 to 50 years .
Most camels are domesticated(驯化)and fed by people. Camels are plant-eaters.
Camels are very strong animals with wide, padded feet. They have thick leathery pads on their knees
and chest. Camels have nostrils(鼻孔)that can open and close, protecting them from the desert
environment. Bushy eyebrows and two rows of long eyelashes protect their eyes from sand. Their mouth
is extremely tough, allowing camels to eat thorny(带刺的)desert plants. Their widened feet help them
move without sinking into the sand. Their thick coats reflect sunlight, and also protect them from the
intense heat from desert sand. Their long legs help by keeping them further from the hot ground.
Camels can go without food and water for 3 to 4 days. They do not store water in their humps as is
commonly believed. The humps are actually a container of fat. Camels are incredibly(难以置信)
well-adapted to their environment. When conditions heat up, camels can increase their own body
temperature, which prevents sweating and therefore water loss. They may not sweat at all during the day.
Camels are sometimes called "ships of the desert" because people ride them around the hot, dry
deserts of the world. However, the number of camels is becoming smaller for various reasons.
1. According to the passage, camels usually live in .
A. Asia
B. Africa
C. America
D. Australia
2. Paragraph 2 is mainly about .
A. camels are useful animals
B. camels are clever animals
C. camels" body structure and function
D. camels" characteristics and habits
3. The reason why camels lose little water in deserts is that they .
A. get water from green foods
B. can adjust their temperature
C. store enough water in the humps
D. can manage without water
4. What will the author probably talk about following the last paragraph?
A. Ways to protect camels.
B. Habitats of camels.
C. Reasons for raising camels.
D. Functions of camels.
their body positions if they start floating in the wrong direction. This new finding suggests that insects may
employ some of the same methods that birds use for traveling long distances. Scientists have long thought
that insects were simply at the mercy of the wind.
Fascinating as their skills of flight are, migrating behavior has been difficult to study in insects because
many long distant trips happen thousands of feet above ground. Only recently have scientists developed
technologies that can detect such little creatures at such great heights.
To their surprise, though, the insects weren"t passive travelers in the winds. In autumn, for example,
most light winds blew from the east, but the insects somehow sought out ones that carried them south and
they positioned themselves to navigate directly to their wintering homes.
Even in the spring, when most winds flowed northward, the insects didn"t always go with the flow. If
breezes weren"t blowing in the exact direction they wanted to go, the insects changed their body positions
to compensate. Many migrating birds do the same thing.
The study also found, butterflies and moths actively flew within the air streams that pushed them along. By adding flight speeds to wind speeds, the scientists calculated that butterflies and moths can ravel as fast as 100 kilometers an hour. The findings may have real-world applications. With climate warming, migrating insects are growing in number. Knowing how and when these pests move could help farmers decide when to spray their crops.
1. What"s the main idea of the text?
A. Insects migrate with the seasons.
B. The wind helps insects greatly in migrating.
C. Windsurfing insects have real direction.
D. Scientists have trouble in observing insects.
2. Scientists originally thought that _____________.
A. insects always waited for their favorable winds
B. insects chose the winds they wanted to ride
C. insects were just blown about by the wind
D. insects positioned themselves in the winds
3. It is not easy to study the migrating behavior of the insects because _____________.
A. the little creatures can fly very fast
B. they have no regular migrating courses
C. the wind"s direction is hard to foresee
D. their flight is long and high above ground
4. We can learn form the text that _______________.
A. insects fly in the way birds do
B. insects travel more easily in autumn
C. insects never position themselves when flying low
D. insects rest a lot when the wind pushes them along
任务型读写。
阅读下面短文，根据所读内容在表格中的空白处填入恰当的单词。
注意：每个空格只填一个单词。
you put yourself on top, you might want to guess again.
In a test that challenged participants to remember numbers, a young chimp performed better than
Japanese college students.
Here"s how the test worked. At Kyoto University in Japan, human students and chimpanzee
participants sat in front of a computer. Five numbers, ranging from 1 to 9, were combined with one
another and then, they appeared at random places on the screen.
The numbers stayed on the screen for less than a second. In the first test, for example, participants
saw the numbers for 650 milliseconds(about two-thirds of a second).
Then, each number disappeared and they saw a white square instead. Participants had to touch the
squares in numerical order, based on the numbers that had been there a moment before. In this test, the
students touched the boxes in the correct order about 80 percent of the time. A young chimp named
Ayumu performed equally well.
During a harder test, participants were only able to see the numbers for 210 milliseconds.
This time, students only succeeded in putting the boxes in the correct order about 40 percent of the
time. But Ayumu still could select the boxes in the fight order nearly 80 percent of the time.
Some people have what"s called a "photographic memory," which allows them to remember a
surprising number of details after just a quick glimpse of something. Ayumu"s memory might work in a
similar way says lead researcher Tetsuro Matsuzawa.
The chimp"s young age might have something to do with his impressive performance, too. In previous
tests, the Japanese researchers found that young chimps performed better than their mothers.
The scientists are interested to see whether Ayumu loses his strong memory as he grows older. They
already know that young children sometimes have sharp memories when offered something photographical, but they lose this ability over time.
| Topic | A (1)_________ competition between human beings and chimps |
| purpose | To judge whose memory is better |
| The (2)_______ Of the first test | ◆A chimp and some Japanese students participated in the competition and sat before a computer. ◆Different (3)________ of five numbers appeared on the screen. ◆Each of the number was (4)________ by a white square. |
| The results of the second test | ◆Students(5)________to put the boxes in the right order about 40% of the time. ◆Ayumu got the right order (6)_________ the time of the students". |
| conclusion | ◆Some people have "photographic memory", (7)_______ some people to remember numbers after they (8)________ at something. ◆The chimps have the similar (9)_________ to human beings". ◆Young children, just like chimps, have strong memory but they"ll lose it when they (10)___________. |
| 阅读理解 | |
| Japanese Students Suffer from Pressure Last April,15-year-old Rei Iwasaki stopped her piano and flute lessons and began to study every day of the week. Her parents paid to send her to a "cram school(灌输式教学模式的学校)."She wanted very much to pass her exams. In February she did pass an all-day, five-subject examination and entered the high school she hoped to enter. Thirteen-year-old Akio Yoshiwara wasn"t so lucky. Unable to take the pressure of the exams, he hanged himself in February. He left a suicide note which said, "I did my best in this dear life, but it"s no good." Suicides are now a common part of life among students in Japan. The cause is the incredible pressure of the "examination hell." Even a number of teachers are committing suicide each year. When some students broke windows in a school near Tokyo, the principal blamed himself and wrote the following note: "The incidents were due to the lack of appropriate measures by the principal and I apologize. I am very tired. The Japanese educational system is much different from the American system. It is perhaps the most regimented(严密组织的) school system in any of the industrialized nations. Boys and girls wear uniforms and go to school six days a week --- 240 days a year compared to 180 in the U.S. Ninety- five percent graduate from high school compared to seventy-five percent in the U.S. Students don"t ask questions in class but only listen respectfully to the teachers. And every few years students are tested to see which school they will enter next. There is stiff competition for the "best" schools. The result is a well-informed, disciplined student, ideal for factory and company work and excellent at learning specialized skills. But there is little fun in education, little creativity and the incredible pressure of "examination hell." 1. It"s because ______ that many Japanese students committed suicide. A. they didn"t do their best in their lives. B. they were sent to a "cram school". C. of the most regimented school. D. they were unable to take the pressure of the exams. 2. Why did the principal kill himself? Because__________ A. He thought it was his fault that some students broke the windows. B. He was very tired. C. He couldn"t stand the pressure of the "examination hell". D. He blamed himself and wrote a note. 3. Which of the following ideas agrees with the title of the passage. A. The Japanese students love to study under pressure. B. The Japanese students do well under pressure. C. The exams give the Japanese students much pressure. D. The exams make the Japanese students commit suicide each year. 4. Which of the following is Wrong? A. The American educational system is much different from the Japanese system. B. To enter a high school, a student must pass an all-day, five-subject examination. C. The Japanese graduates from high school are much less than the American graduates. D. In Japanese education, there is little creativity as well as little fun. | |
| 阅读理解 | |
| If English means endless new words, difficult grammar and sometimes strange pro- nunciation, you are wrong. Haven"t you noticed that you have become smarter since you started to learn a language? According to a new study by a British university, learning a second language can lead to an increase in your brain power. Researchers found that learning other languages changes grey matter. This is the area of the brain which processes information. It is similar to the way that exercise builds muscles. The study also found the effect is greater, the younger people learn a second language. A team led by Dr Andrea Mechelli, from University College London, took a group of Britons who only spoke English. They were compared with a group of "early bilinguals" who had learnt a second language before the age of five, as well as a number of later learners. Scans showed that grey matter density (密度) in the brain was greater in bilinguals than in people without a second language. But the longer a person waited before mastering a new language, the smaller the difference. "Our findings suggest that the structure of the brain is changed by the experience of learning a second language," said the scientists. It means that the change itself increases the ability to learn. Professor Dylan Vaughan Jones of the University of Wales, has researched the link between bilingualism and maths skills. "Having two languages gives you two windows on the world and makes the brain more flexible (灵活的),"he said. "You are actually going beyond language and have a better understanding of different ideas." The findings were matched in a study of native Italian speakers who had learned English as a second language between the ages of two and 34. Reading, writing, and comprehension were all tested. The results showed that the younger they started to learn, the better. "Studying a language means you get an entrance to another world," explained the scientists. 1. Tire main subject talked about in this passage is ______. A. science on learning a second language B. man"s ability of learning a second language C. 1anguage can help brain power D. 1anguage learning and maths study 2. In the second paragraph, the writer mentions "exercise" in order to ______. A. say language is also a kind of physical labor B. prove that one needs more practice when he (she) is learning a language C. to show the importance of using the language when you learn the language D. make people believe language learning helps grey matter work well 3. We may know from the scientific findings that ______. A. the earlier you start to learn a second language, the higher the grey matter density is B. there is no difference between a later second language learner and one who doesn"t know a second language C. the experience of learning a second language has bad effect on people"s brain D. the ability of learning a second language is changing all the time 4. The underlined word "bilingual"" probably means ______. A. a researcher on language learning B. a person who is good at learning foreign languages C. a person who can speak two languages D. an active language learner |