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Since ancient times, people have known about its ability to reduce pain and high body temperature. More than 2000 years ago, the Greek doctor Hippocrates advised his patients to chew on the bark and leaves of the willow.
The tree contains a chemical called salicin(柳醇). From salicin, researchers in the 1800s discovered how to make salicylic acid(酸). And in 1897, a chemist named Felix Hoffmann at Friedrich Bayer and Company in Germany created acetyl salicylic acid. Later it became the active substance in a new medicine that Bayer called aspirin. The "a" came from acetyl. The "spir" came from the spirea plant, which also produces salicin. And the "in" Well, that is a common way to end medicine names.
In 1982, a British scientist shared the Nobel Prize in Medicine in part for discovering how aspirin works. Sir John Vane found that aspirin blocks the body from making natural substances called prostaglandins(前列腺素).Prostaglandins have several effects on the body. Some cause pain and the expansion, or swelling( 肿瘤; 膨胀), of damaged tissue. Others protect the lining of the stomach and small intestine. Prostaglandins also make the heart, kidneys and blood vessels (血管)work well. But there is a problem. Aspirin works against all prostaglandins, good and bad. Scientists learned how aspirin interferes with an enzyme(酶). One form of this enzyme makes the prostaglandin that causes pain and swelling. Another form of the enzyme creates a protective effect. So aspirin can reduce pain and swelling in damaged tissues. But it can also harm the inside of the stomach and small intestine(肠).
【小题1】What sickness can the medicine from the willow deal with according to the passage?
| A.Cold | B.Toothache | C.Cancer | D.Skin disease |
| A.It results from pain. |
| B.It prevents the lining of the stomach and small intestine. |
| C.It causes blood vessels to work wrongly. |
| D.It is sometimes good but sometimes bad. |
| A.Aspirin can treat almost diseases. |
| B.Aspirin can create the protective enzyme. |
| C.Aspirin can harm the inside of the stomach and small intestine. |
| D.Aspirin can protect the inside of the stomach and small intestine. |
Watching online open classes of US top universities has become necessary for many young Chinese who find it a shortcut to make their life more meaningful, in addition to learning knowledge and language.
Guo Lei, a native of Guangzhou, has become addicted to various open courses after she watched the online video of "Justice: What's the right thing to do."The video clip was taken during an open class taught by Michael Sandel, professor of philosophy at Harvard University.
Sandel set up a situation in which a high-speed train with a technical problem is running towards five people who are working on the current track, while there is only one worker on the adjacent (相邻的) track.He inspired students to discuss what the driver should do -- to change the direction for five lives -- which apparently will kill the other -- or to do nothing and allow five people to die.
Guo said she was immediately attracted by the topic and the discussion of the Harvard students about morality and justice.She even introduced the case to her colleagues for discussion, since Sandel did not give an answer, unlike most Chinese teachers she knew before.
The inspiring and lively teaching style of American professors refreshed Guo's impression about the traditional score-oriented Chinese educational system and prompted more Chinese to frequently search and watch open class resources of American top colleges, including Massachusetts Institute of Technology (MIT) and University of California Berkeley.
On China's social networking websites, such as renren.com, kaixin001.com and sina.com, netizens have spontaneously formed many study groups to share video resources and exchange opinions.Volunteers have added English or Chinese subtitles onto the videos to help more Chinese enjoy the videos without language difficulties.
"The popularity of American open classes reflects the spir it of sharing," said Yu Xinke, Vice chancellor with the Continuous Education School of South China University of Technology.
If the train driver changes the current track , how many people will be killed?(No more than one word)
Why can Chinese have no difficulty enjoying the foreign class videos?(No more than 10 words)
Besides knowledge and language, list three other things Chinese can learn from watching such foreign online class? (No more than 15 words in total)
①
②
③
What is the main idea of this passage? (No more than 10 words)
查看习题详情和答案>>Watching online open classes of US top universities has become necessary for many young Chinese who find it a shortcut to make their life more meaningful, in addition to learning knowledge and language.
Guo Lei, a native of Guangzhou, has become addicted to various open courses after she watched the online video of "Justice: What's the right thing to do."The video clip was taken during an open class taught by Michael Sandel, professor of philosophy at Harvard University.
Sandel set up a situation in which a high-speed train with a technical problem is running towards five people who are working on the current track, while there is only one worker on the adjacent (相邻的) track.He inspired students to discuss what the driver should do -- to change the direction for five lives -- which apparently will kill the other -- or to do nothing and allow five people to die.
Guo said she was immediately attracted by the topic and the discussion of the Harvard students about morality and justice.She even introduced the case to her colleagues for discussion, since Sandel did not give an answer, unlike most Chinese teachers she knew before.
The inspiring and lively teaching style of American professors refreshed Guo's impression about the traditional score-oriented Chinese educational system and prompted more Chinese to frequently search and watch open class resources of American top colleges, including Massachusetts Institute of Technology (MIT) and University of California Berkeley.
On China's social networking websites, such as renren.com, kaixin001.com and sina.com, netizens have spontaneously formed many study groups to share video resources and exchange opinions.Volunteers have added English or Chinese subtitles onto the videos to help more Chinese enjoy the videos without language difficulties.
"The popularity of American open classes reflects the spir it of sharing," said Yu Xinke, Vice chancellor with the Continuous Education School of South China University of Technology.
1. If the train driver changes the current track , how many people will be killed?(No more than one word)
2.Why can Chinese have no difficulty enjoying the foreign class videos?(No more than 10 words)
3. Besides knowledge and language, list three other things Chinese can learn from watching such foreign online class? (No more than 15 words in total)
①
②
③
4.What is the main idea of this passage? (No more than 10 words)
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Since ancient times, people have known about its ability to reduce pain and high body temperature. More than 2000 years ago, the Greek doctor Hippocrates advised his patients to chew on the bark and leaves of the willow.
The tree contains a chemical called salicin(柳醇). From salicin, researchers in the 1800s discovered how to make salicylic acid(酸). And in 1897, a chemist named Felix Hoffmann at Friedrich Bayer and Company in Germany created acetyl salicylic acid. Later it became the active substance in a new medicine that Bayer called aspirin. The "a" came from acetyl. The "spir" came from the spirea plant, which also produces salicin. And the "in" Well, that is a common way to end medicine names.
In 1982, a British scientist shared the Nobel Prize in Medicine in part for discovering how aspirin works. Sir John Vane found that aspirin blocks the body from making natural substances called prostaglandins(前列腺素).Prostaglandins have several effects on the body. Some cause pain and the expansion, or swelling( 肿瘤; 膨胀), of damaged tissue. Others protect the lining of the stomach and small intestine. Prostaglandins also make the heart, kidneys and blood vessels (血管)work well. But there is a problem. Aspirin works against all prostaglandins, good and bad. Scientists learned how aspirin interferes with an enzyme(酶). One form of this enzyme makes the prostaglandin that causes pain and swelling. Another form of the enzyme creates a protective effect. So aspirin can reduce pain and swelling in damaged tissues. But it can also harm the inside of the stomach and small intestine(肠).
- 1.
What sickness can the medicine from the willow deal with according to the passage?
- A.Cold
- B.Toothache
- C.Cancer
- D.Skin disease
- A.
- 2.
What can we know about Prostaglandin according to the passage?
- A.It results from pain.
- B.It prevents the lining of the stomach and small intestine.
- C.It causes blood vessels to work wrongly.
- D.It is sometimes good but sometimes bad.
- A.
- 3.
What can we know about aspirin according to the passage?
- A.Aspirin can treat almost diseases.
- B.Aspirin can create the protective enzyme.
- C.Aspirin can harm the inside of the stomach and small intestine.
- D.Aspirin can protect the inside of the stomach and small intestine.
- A.
I don’t ever want to talk about being a woman scientist again. There was a time in my life when people asked constantly for stories about what it’s like to work in a field dominated by men. I was never very good at telling those stories because truthfully I never found them interesting. What I do find interesting is the origin of the universe, the shape of space-time and the nature of black holes.
At 19, when I began studying astrophysics, it did not bother me in the least to be the only woman in the classroom. But while earning my Ph.D. at MIT and then as a post-doctor doing space research, the issue started to bother me. My every achievement—jobs, research papers, awards—was viewed through the lens of gender (性别) politics. So were my failures. Sometimes, when I was pushed into an argument on left brain versus (相对于) right brain, or nature versus nurture (培育), I would instantly fight fiercely on my behalf and all womankind.
Then one day a few years ago, out of my mouth came a sentence that would eventually become my reply to any and all provocations: I don’t talk about that anymore. It took me 10 years to get back the confidence I had at 19 and to realize that I didn’t want to deal with gender issues. Why should curing sexism be yet another terrible burden on every female scientist? After all, I don’t study sociology or political theory.
Today I research and teach at Barnard, a women’s college in New York City. Recently, someone asked me how may of the 45 students in my class were women. You cannot imagine my satisfaction at being able to answer, 45. I know some of my students worry how they will manage their scientific research and a desire for children. And I don’t dismiss those concerns. Still, I don’t tell them “war” stories. Instead, I have given them this: the visual of their physics professor heavily pregnant doing physics experiments. And in turn they have given me the image of 45 women driven by a love of science. And that’s a sight worth talking about.
Why doesn’t the author want to talk about being a woman scientist again?
A. She feels unhappy working in male-dominated fields.
B. She is fed up with the issue of gender discrimination.
C. She is not good at telling stories of the kind.
D. She finds space research more important.
From Paragraph 2, we can infer that people would attribute the author’s failures to ________.
A. the very fact that she is a woman
B. her involvement in gender politics
C. her over-confidence as a female astrophysicist
D. the burden she bears in a male-dominated society
What did the author constantly fight against while doing her Ph.D. and post-doctoral research?
A. Lack of confidence in succeeding in space science.
B. Unfair accusations from both inside and outside her circle.
C. People’s stereotyped attitude toward female scientists.
D. Widespread misconceptions about nature and nurtured.
Why does the author feel great satisfaction when talking about her class?
A. Female students no longer have to bother about gender issues.
B. Her students’ performance has brought back her confidence.
C. Her female students can do just as well as male students.
D. More female students are pursuing science than before.
What does the image the author presents to her students suggest?
A. Women students needn’t have the concerns of her generation.
B. Women have more barriers on their way to academic success.
C. Women can balance a career in science and having a family.
D. Women now have fewer problems pursuing a science career.
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