All the scientific evidence ______ that incre...

All the scientific evidence ______ that increasing use of carbon dioxide ______ the rise of the earth’s temperature.

A．show; result in                         B．shows; result from

C．shows; results in                        D．shows; results from

高二英语单项填空困难题查看答案及解析

All the scientific evidence ________ that increasing use of mobile phones ________ damaging our health.

A. show; are　　 B. shows; are

C. show; is　　 D. shows; is

高二英语单项填空中等难度题查看答案及解析

Clinical evidence began to________， suggesting that the new drugs had a wider range of useful activities than had been predicted from experiments in animals.

A.operate B.strengthen

C.approve D.accumulate

高二英语单项填空中等难度题查看答案及解析

Clinical evidence began to ______ suggesting that the new drugs had a wider range of useful effect than had been predicted from experiments in animals.

高二英语单项填空简单题查看答案及解析

Recent scientific evidence seems to indicate that this 　　　　 is incorrect.

A. reflection　　　 B. reputation

C. appreciation　　 D. assumption

高二英语单项填空中等难度题查看答案及解析

Researchers have found more evidence that suggests a relationship between races and rates of lung cancer among smokers. A new study shows that black people and Native Hawaiians are more likely to develop lung cancer from smoking. It compared their risk to whites, Japanese-Americans and Latinos.

Researchers at the University of Southern California and the University of Hawaii did the new study. The New England Journal of Medicine published the findings. The eight-year research studied more than 180,000 people. They included present and former smokers and people who never smoked. Almost 2,000 people in the study developed lung cancer.

Researchers say genetics might help explain the racial and ethnic differences. There could be differences in how people's bodies react to smoke. But environmental influences, including the way people smoke, could also make a difference.

African-Americans and Latinos in the study are reported smoking the fewest cigarettes per day. Whites are the heaviest smokers. But the scientists point out that blacks have been reported to breathe cigarette smoke more deeply than white smokers. This could fill their lungs with more of the chemicals in tobacco that cause cancer.

Scientists know that some diseases effect different groups differently. And some drug companies have begun to develop racially targeted medicines. Last June, the United States Food and Drug Administration approved a drug designed to treat heart failure in black patients. The name is BiDil. The agency called it "a step toward the promise of personalized medicine."

1.Which of the following orders is from higher to lower risk of having lung cancer?

A．Whites—Native Hawaiians

B．Africans—Americans—Latinos

C．Asians—Native Hawaiians

D．Africans—Americans—Native Hawaiians

2.Researchers agree that it is _____ that may probably determine black people’s risk of lung cancer.

A．the larger amount of smoking than white people

B．the living style or habit of the blacks

C．the depth of cigarette smoke into their lungs

D．the physical strength to react to cigarette smoke

3.People in the new study are made up of _____.

A．heavy smokers in America                 B．the black and white people

C．the Asians and Hawaiians                  D．smokers and non-smokers

4.The production of BiDil referred to in the last paragraph is to _____.

A．explain different races react to some diseases differently

B．tell the readers that racial differences exist in smokers

C．show a big step people have taken in the medicine area

D．support the idea that it is easy for blacks to have cancers

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The greatest scientific breakthroughs of 2014 have affected all aspects of modern life, from medicine, to space exploration, to the future of renewable technologies. Scientists all over the globe are publishing their findings and treating patients with new medicines and techniques that are changing everyday life for the human race, and adding to our vast banks of scientific knowledge.

Irish teens make a breakthrough in crop yields（产量）

16-year-old Ciara Judge, Emer Hickey, and Sophie Healy-Thow won the Google Science Fair2014, with their project “Natural Bacteria Fighting World Hunger”.

While learning about the food shortage in Africa, the three teens got thinking about how they could help. What they found may change the future of worldwide food production.. They experimented and were able to reduce germination（发芽）time by 50%and increase plants’ yield by up to 74%.

This could create the possibility of increased crop yields and reducing crop loss due to bad weather.

Cancer is cured?

In May 2014, the Mayo Clinic published a study in which they treated a 50-year-old female patient’s blood cancer with the measlesvaccine（麻疹疫苗）.After receiving the vaccine, Stacy Erholtz’s body is completely free of cancer.

Stephen Russell, who led the research, said, “It’s a landmark. We’ve known for a long time that we can introduce a virus into the blood and destroy cancer in mice. Nobody’s shown that you can do that in people before.” The measles vaccine will not work for all types of cancer, but is an unbelievable step forward.

Water found on Saturn’s moon Enceladus

In April, scientists announced that NASA’s Cassini spacecraft discovered a body of water on Enceladus, a moon of Saturn（土星）. Enceladus is an icy moon about 300 miles in diameter （直径）.and its mysterious body of water appears to be 5 miles deep, around the size of Lake Superior.

Scientists have also discovered that the body of water features a rock is a possible sign of conditions good for the development of life.

1.The text is mainly about _______.

A. the new findings in medicine

B. the greatest scientists in 2014

C. the new techniques in space exploration

D. the greatest scientific breakthroughs of 2014

2. What’s the aim of the three Irish teens’ Project?

A. To attract Google’s attention.

B. To do research on Africa’s soil.

C. To solve the problem of world hunger..

D. To understand different plants’ germination time.

3. What can be inferred about the Mayo Clinic’s study?

A. Blood cancer is very is very easy to cure.

B. All kinds of cancer will be cured soon.

C. Medical experiments on people are not allowed.

D. The research is a breakthrough in cancer treatment.

4.What can we infer from the last paragraph?

A. Enceladus is a warm moon

B. Enceladus may be suitable for life.

C. Enceladus is as big as Lake Superior.

D. Enceladus has several rocky sea floors.

高二英语阅读理解中等难度题查看答案及解析

Scientific Progress

Most scientific progress is the result of careful consideration of work that has already been done. The wonderful world which lies before us today has been put up by hardworking men with clear heads and inventive mind, and these who follow them along life’s road will improve on their efforts. It is sometimes necessary to question and even to disbelieve some of the statements made by experts. Action or experiment can often end an argument or achieve a breakthrough.

When men were wondering whether it was possible to reach India by sailing westwards from Europe, and whether there was any land on the other side of the Atlantic Ocean, Christopher Columbus decides to act. He gathered some men, invited them to go on board his three ships, and set out across the dangerous waters of the Atlantic Ocean. He was successful in finding land, but it was not India. The result of his action was that the arguments came to the end.

Any young man who wishes to do research must be courageous enough to question old beliefs and do some original thinking about them. Although we seem to know so much, there are many things we don’t know. Even when we pull an atom to pieces, we do not really know what the pieces are, we often do not reach the reality behind what we discover, and the more we learn, the better we realize our ignorance.

1.Christopher Columbus decided to set out his trip because he wants to ________

A.travel round the world

B.bring words into action

C.discover the truth with action

D.bring the argument to an end

2.According to the passage, the more we learn _______

A．the more ignorance we will become

B. the more brilliant we are

C. the more confident we are of ourselves

D. the more we know about our ignorance

3.Our present wonderful world has been built up by _______

A. men who do not believe in others but themselves

B. those who work hard and dare to break way from old ideas

C. those who can make improvements on other people’s work

D. men who work extremely hard in following their teachers

4.Columbus succeeded in finding out that_______

A. the Atlantic was dangerous to get across

B. India was to the west of the Atlantic

C. There was land on the other side of the Atlantic

D. it was possible sail to India by crossing the Atlantic

高二英语阅读理解中等难度题查看答案及解析

Recently there was a major discovery in the scientific research — the mapping of all DNA in a human gene(基因) is complete. Couple of years ago, this seems an impossible task for scientist to accomplish. All this progress in science leads us to believe that the day, when the human being will be cloned, is not far away. Human cloning has always been a topic of argument, in terms of morality(道德) or religion.

Taking a look at why cloning might be beneficial, among many cases, it is arguable that parents who are known to be at risk of passing a genetic limitation to a child could make use of cloning. If the clone was free of genetic limitations, then the other clone would be as well. The latter could be inserted in the woman and allowed to ripen to term. Moreover, cloning would enable women, who can’t get pregnant, to have children of their own.

Cloning humans would also mean that organs could be cloned, so it would be a source of perfect transfer organs. This surely would be greatly beneficial to millions of unfortunate people around the world that are expected to lose their lives due to failure of single (or more) organ(s). It is also arguable that a ban on cloning may be unlawful and would rob people of the right to reproduce and limit the freedom of scientists.

Arguments against cloning are also on a perfectly practical side. Primarily, I believe that cloning would step in the normal “cycle” of life. There would be a large number of same genes, which reduce the chances of improvement, and, in turn, development — the fundamental reason how living things naturally adapt to the ever-changing environment. Life processes failing to do so might result in untimely disappearance. Furthermore, cloning would make the uniqueness that each one of us possesses disappear, thus leading to creation of genetically engineered groups of people for specific purposes, and chances are that those individuals would be regarded as “objects” rather than people in the society.

Scientists haven’t 100% guaranteed that the first cloned humans will be normal. Thus, this could result in introduction of additional limitations in the human “gene-pool”.

Regarding such arguable topics in “black or white” approach seems very innocent to me personally. We should rather try to look at all “shades” of it. I believe that cloning is only legal if its purpose is for cloning organs; not humans. Then we could regard this as for “saving life” instead of “creating life”. I believe cloning humans is morally and socially unacceptable.

1.  Which of the following is true according to the passage？

A. Genetic limitation will be beneficial for some women

B. A large number of genes will prevent us from developing

C. Prohibition(禁止) of cloning might limit the freedom of scientists

D. First cloned humans might be normal according to scientists

2.What’s the author’s opinion on cloning?

A. Cloning should be entirely banned

B. Cloning should be used in creating life

C. Cloning will take away the right to reproduce

D. Cloning is acceptable if it is used for cloning organs

3.Which of the following shows the structure of the passage

高二英语阅读理解中等难度题查看答案及解析

Recently there was a major discovery in the scientific research—the mapping of all DNA in a human gene is complete. Several years ago, it seems an impossible task for scientist to accomplish. All this progress in science leads us to believe that the day when human being will be cloned is not far away. Human cloning has always been a topic of argument in terms of morality (道德) or religion.

Taking a look at why cloning might be beneficial, among many cases, it is arguable that parents who are known to be at risk of passing a genetic limitation to a child could make use of cloning. Moreover, cloning would enable women who can't get pregnant to have children of their own.

Cloning humans would also mean that organs could be cloned, so it would be a source of perfect transfer organs. This surely would be greatly beneficial to millions of unfortunate people around the world who are expected to lose their lives due to organ problems. It is also arguable that a ban on cloning may be unlawful and would rob people of the right to reproduce and limit the freedom of scientists.

However, arguments against cloning are also on a perfectly practical side. Primarily, I believe that cloning would step in the normal "cycle" of life. There would be a large number of same genes, which reduce the chances of evolution, since it may be difficult for living creatures to naturally adapt to the ever-changing environment, which will result in ultimate disappearance. Furthermore, cloning would make the uniqueness that each one of us possesses disappear. Thus, leading to creation of genetically engineered groups of people for specific purposes and, chances are that those individuals would be regarded as "objects" rather than people in the society.

Scientists couldn't surely guarantee that the first cloned humans will be normal. Thus this could result in introduction of additional limitations in the human "gene-pool".

Regarding such arguable topics in "black or white" approach seems very innocent. We should try to look at all "shades" of it. I believe that cloning is only legal if its purpose is for cloning organs; not humans. Then we could regard this as for "saving life" instead of "creating life". It is believed that cloning humans is morally and socially unacceptable.

1.What's the author's opinion on cloning?

A.Cloning should be entirely banned.

B.Cloning should be used in creating life.

C.Cloning will take away the right to reproduce.

D.Cloning is acceptable if it is used for cloning organs.

2.Which of the following shows the structure of the passage?

A. B.

C. D.

3.Where is the text probably from?

A.A story book. B.A magazine.

C.A science fiction. D.A novel.

高二英语阅读理解中等难度题查看答案及解析