According to the Associated Press (AP), a Chinese scientist claims he successfully created the world’s first genetically-edited babies.
Chinese researcher He Jiankui, a research professor at China’s Southern University of Science and Technology in Shenzhen, said he had edited DNA of twin girls born a few weeks ago. ①
He’s claims were immediately criticized by some scientists as unsafe and unethical. This kind of gene editing is forbidden in the United States and many other countries. ②Such changes to a person’s DNA can pass to future generations and risk harming other genes.
In interviews, He Jiankui defended his work. He said he had performed the gene editing to help protect the babies from future infection of HIV, the virus responsible for the disease AIDS. He said the process had “worked safely” and the twin girls were “as healthy as any other babies.” He told the AP he felt a strong responsibility “not just to make a first, but also to make an example” for future research. “Society will decide what to do next,” he said.
When He’s claims became public, the university made a statement saying his work had “seriously went against academic ethics and standards.” University officials said they had no knowledge of his research and had looked into the case. ③
China’s National Health Commission was “highly concerned” about the claims and ordered local health officials “to immediately look into” He’s activity. “We have to be responsible for the people’s health and will act on this according to the law,” the commission said.
Scientists discovered in recent years a new way to edit genes that make up a person’s DNA throughout the body. The tool, called CRISPR-cas9, makes it possible to change DNA to supply a needed gene or take one away that is causing problems. So far the tool has only been used on adults to treat deadly diseases, and the changes only affected that person.
④Kiran Musunuru, a scientist from University of Pennsylvania, told the AP that if such an experiment had been carried out on human beings, it could not be “morally or ethically reasonable.” Julian Savulescu, a medical ethics expert at Britain’s University of Oxford, agreed. “If true, this experiment may cause disasters,” he told Reuters.
However, one well-known geneticist, Harvard University’s George Church, defended the attempt to edit genes to prevent infections of HIV. He told the AP that since HIV is “a major and growing public health threat” he finds such experiments “valuable.”
1.What can we learn from this passage?
A. All scientists consider He’s experiment unsafe and unethical.
B. The university He works in supports his experiment.
C. Many countries don’t allow editing babies genetically.
D. China’s National Health Commission thinks highly of He’s experiment.
2.The following sentence “However, many scientists believe such experiment is dangerous.” can be placed in __________.
A. ① B. ②
C. ③ D. ④
3.What’s the author’s attitude towards He Jiankui’s research?
A. Supportive. B. Uninterested.
C. Doubtful. D. Neutral.
4.What might be the best title of this passage?
A. Chinese Scientist Claims First Gene Edited Babies
B. Chinese Scientist Finds A New Cure For AIDS
C. Gene Editing Still Has A Long Way To Go
D. China Takes The Lead In Gene Editing
高一英语阅读理解困难题
According to the Associated Press (AP), a Chinese scientist claims he successfully created the world’s first genetically-edited babies.
Chinese researcher He Jiankui, a research professor at China’s Southern University of Science and Technology in Shenzhen, said he had edited DNA of twin girls born a few weeks ago. ①
He’s claims were immediately criticized by some scientists as unsafe and unethical. This kind of gene editing is forbidden in the United States and many other countries. ②Such changes to a person’s DNA can pass to future generations and risk harming other genes.
In interviews, He Jiankui defended his work. He said he had performed the gene editing to help protect the babies from future infection of HIV, the virus responsible for the disease AIDS. He said the process had “worked safely” and the twin girls were “as healthy as any other babies.” He told the AP he felt a strong responsibility “not just to make a first, but also to make an example” for future research. “Society will decide what to do next,” he said.
When He’s claims became public, the university made a statement saying his work had “seriously went against academic ethics and standards.” University officials said they had no knowledge of his research and had looked into the case. ③
China’s National Health Commission was “highly concerned” about the claims and ordered local health officials “to immediately look into” He’s activity. “We have to be responsible for the people’s health and will act on this according to the law,” the commission said.
Scientists discovered in recent years a new way to edit genes that make up a person’s DNA throughout the body. The tool, called CRISPR-cas9, makes it possible to change DNA to supply a needed gene or take one away that is causing problems. So far the tool has only been used on adults to treat deadly diseases, and the changes only affected that person.
④Kiran Musunuru, a scientist from University of Pennsylvania, told the AP that if such an experiment had been carried out on human beings, it could not be “morally or ethically reasonable.” Julian Savulescu, a medical ethics expert at Britain’s University of Oxford, agreed. “If true, this experiment may cause disasters,” he told Reuters.
However, one well-known geneticist, Harvard University’s George Church, defended the attempt to edit genes to prevent infections of HIV. He told the AP that since HIV is “a major and growing public health threat” he finds such experiments “valuable.”
1.What can we learn from this passage?
A. All scientists consider He’s experiment unsafe and unethical.
B. The university He works in supports his experiment.
C. Many countries don’t allow editing babies genetically.
D. China’s National Health Commission thinks highly of He’s experiment.
2.The following sentence “However, many scientists believe such experiment is dangerous.” can be placed in __________.
A. ① B. ②
C. ③ D. ④
3.What’s the author’s attitude towards He Jiankui’s research?
A. Supportive. B. Uninterested.
C. Doubtful. D. Neutral.
4.What might be the best title of this passage?
A. Chinese Scientist Claims First Gene Edited Babies
B. Chinese Scientist Finds A New Cure For AIDS
C. Gene Editing Still Has A Long Way To Go
D. China Takes The Lead In Gene Editing
高一英语阅读理解困难题查看答案及解析
A quarter of US adults say they read no books at all in the past year, according to an Associated Press-Ipsos survey. The typical person said that he / she read four books in the last year and, excluding those who had not read any books at all, the usual number of books read was seven.
Of those who did read, women and pensioners (领养老金者) were the most eager readers, and religious works and popular fiction were the top choices. The number of books read was nine books for women and five for men. The number also showed that those with college degrees read the most, and people aged 50 and over read more than those who are younger.
People from the West and Midwest are more likely to have read at least one book in the past year. Southerners who do read tend to read more books — mostly religious books and romance novels — than people from other regions.
Those who said they never attend religious services read nearly twice as many books as those who attend frequently, but the Bible and religious works were read by two thirds of the people in the survey, more than all the other categories. Popular fiction, histories, biographies and mysteries took up about half, while one in five read romance novels. Politics, poetry and classical literature were named by fewer than 5% of readers. More women than men read every major category of books except for history and biography books. Men tend to prefer non-fiction.
Book sales in the US have been flat in recent years and are expected to stay that way, which, experts think, results from competition from the Internet and other media, and the unsteady economy.
1.The passage mainly tells us ______.
A. the number of Americans who read books last year dropped
B. the book sales in the US have been dropping in recent years
C. the reasons why one in four Americans read no books last year
D. about region differences in the number and kind of books read last year
2.Which kind of Americans read the most last year according to the survey?
A. Older men with college degrees from the South.
B. Older women with college degrees from the South.
C. Younger educated men from the Midwest.
D. Younger educated women from the West.
3.What kind of books was read most according to the passage?
A. Religious works. B. Popular fiction.
C. Poetry. D. History.
4.Which of the following reasons why people read fewer books is true?
①. Competition from the Internet.
②. Competition from other media.
③. The unsteady economy.
④. People attend religious services
⑤. No time for reading.
A. ①②③ B. ②③⑤ C. ①③⑤ D. ②③④
高一英语阅读理解中等难度题查看答案及解析
According to scientists’ research, the month in which babies are born could affect them in some ways. Babies born in spring get sick easily. Children born under Aquarius (Jan. 21st ----Feb. 19th)may be less clever than those born in other seasons. They may also have shorter lives than those born in autumn. Scientists believe many of the differences can be explained by the mother's exposure to sunlight in pregnancy(怀孕).
Sunlight helps lead to the production of Vitamin(维生素) D in the body. The lack (缺乏)of vitamin D in the first months of life may have a bad effect on health.
Vitamin D is called the "sunshine vitamin". It has a good effect on health. A study showed that people born from April to June had slightly shorter lives than those born in October, November or December. Similar studies in the USA showed that people born in autumn lived about 160 days longer than those born in spring.
Professor Russell Foster said the conclusions were surprising and interesting. He added, "These are small effects but they are very, very clear. I am not giving voice to star signs and they are just for fun. But it is true that we are affected by our season of birth."
1.Babies born in ______get sick easily.
A. summer B. spring
C. autumn D. winter
2.What does the underlined word “exposure” mean in Chinese?
A. 偏爱 B. 抗拒
C. 过敏 D. 暴露
3.What can we know about vitamin D according to the passage?
A. It comes from sunlight B. It doesn’t help people live longer
C. Sunlight prevents its’ production D. It has a good effect on health
高一英语阅读理解简单题查看答案及解析
Ever feel like you’ve been hit on the head after a bad night’s sleep? According to scientists, the thought isn’t as unbelievable as it seems.
A study found going without sleep for just one night causes changes in the brain similar to those that happen after a blow to the head. The researchers said the healthy young men examined in the study showed a sudden rise in the same chemicals which indicate(表明) brain damage. Professor Christian Benedict, of Uppsala University, Sweden, explained that the chemicals NSE and S-100B are biomarkers(生物指标) for brain damage, such as concussion(脑震荡). He said, “What we found was their levels in the blood rose in the group that went without sleep for a night. This was not to the degree that would happen after a head injury, for example, but it was still worth paying attention to. During sleep, the brain cleans itself of poisonous substances.” He said the findings support the previous(以前的) research showing how the brain makes use of sleep to clean itself.
Professor Benedict also said his study could support previous studies which linked a lack of sleep with increased risk of Alzheimer’s and Parkinson’s diseases. The rise of the chemicals in the blood after sleep loss may suggest not getting enough sleep leads to a loss of brain tissue, he explained. Professor Benedict, whose study is published in the journal Sleep, added, “In conclusion, the findings of our trial indicate a good night’s sleep may be very important for keeping brain health.”
A third of the UK population suffer from sleep-related problems, while the average person now sleeps for only seven hours a night, compared with almost nine a few decades ago. Many scientists believe irregular sleeping patterns lead to illnesses ranging from aches and pains to heart disease, while less than eight hours’ sleep a night can lower the IQ the next day.
1.If you don’t sleep for a night, what will happen?
A. There will be a rise in the chemicals NSE and S-100B
B. The chemicals NSE and S-100B will drop to a lower level
C. Some of the chemicals NSE and S-100B will change into other matters
D. The chemicals NSE and S-100B will be less able to get rid of poisonous matters
2.What is the previous study mainly about according to the passage?
A. The way to avoid brain damage
B. The ways to improve the quality of sleep
C. The ways that have effect on people’s sleep
D. The way the brain uses sleep to clean itself
3.We can we infer from the last paragraph that .
A. man’s intelligence is affected by sleep in a way
B. people who need more sleep have a higher IQ
C. one fourth of the UK population have sleep-related problems
D. modern people need less sleep than those a few decades ago
4.What’s is the theme of the passage?
A. Eight hours’ sleep is important
B. How human brains work during sleep
C. Sleep loss is close to a blow to the head
D. Regular sleeping patterns improve health
高一英语阅读理解中等难度题查看答案及解析
Complete the following sentences according to the initials or Chinese.
1.The organization devoted to helping the homeless has risen from the a_____ to become very successful.
2.Great men are those who see that spiritual life is more important than m_____ possessions.
3.The government has p_____ millions of pounds into the education system.
4.These pieces of paper had been buried b_____ the earth for thousands of years.
5.The rich businessman f_____ a hospital and a school in the town where he was born.
6.It was reported this morning that the driver of the truck had already f_____ the scene of the accident.
7.Marcus left his hometown as a poor, working class boy and returned as an extremely _____ (富有的) man.
8.I was about to go out this morning when there was a huge bang as if someone had _____ (引爆) a bomb outside.
9.A _____ (沙尘暴) is a strong wind in a desert area, which carries sand through the air.
10._____ (学者) generally agreed that Hemingway’s The Sun Also Rises is one of the modern classics in the United States.
高一英语单词拼写简单题查看答案及解析
Complete the following sentences according to the initials or Chinese.
1.Greenpeace works to p_____ awareness of the dangers that threaten our planet today.
2.The Olympic m_____ is “Swifter, higher, stronger. ” It means that every athlete should try to run faster, jump higher, and throw farther.
3.Roy made a few c_____ unintentionally to her about her hair and now she’s gone and cut it all off!
4.When someone c_____, they do not obey a set of rules which they should be obeying, for example in a game or exam.
5.In the 1980s, Tim, together with his three business partners, was f_____ into believing that they had won a lot of money.
6.Don’t let yourself be p_____ into buying things you don’t want.
7.As a housewife, my mother usually cares about how much money my father can earn, and which _____ (杂货店) store has cheaper eggs.
8.Elizabeth has such a(n) _____ (纯真的) face that I find it hard to believe anything bad of her.
9.The furniture that my father bought last year has been recently cleaned to bring back the _____ (光泽).
10.Experts hoped that the measures taken recently by the government might _____ (解决) the serious economic problem.
高一英语单词拼写中等难度题查看答案及解析
Complete the following sentences according to the initials or Chinese.
1.The new railway was constructed to t_____ coal across Alaska to ports on the coast.
2.The professor, along with his several assistants, came up with a new theory to explain the o_____ of the universe.
3.After living in France for years, Diana eventually became a French c_____.
4.My grandma, who had been a high school teacher for more than 30 years, found it difficult to establish a new r_____ in a short time after retirement.
5.My friend Gordon lent me the money. O_____, I couldn’t have afforded the trip.
6.As a high-school teenager, you should set _____ (目标) for yourself at the beginning of each school year.
7.I’m delighted to have a(n) _____ (队友) like Gerrard as I can count on him supplying me with perfect passes.
8.Now, if you’d all please raise your glasses, I’d like to propose a(n) _____ (敬酒) to the bride and groom.
9.Mrs Tracy heard the wind _____ (呼啸) through the trees and the howl of a distant wolf.
10.Jessica is a wonderfully creative dancer but she doesn’t have the (技巧) _____ of a truly great performer.
高一英语单词拼写简单题查看答案及解析
Directions: Complete the following sentences according to the first given letter or the Chinese in the sentence.
1. The club is for _____and people in their early twenties, so that’s why some old people will not accept it.
2.All the teachers and students in our school are______(要求) to attend school assembly on Monday morning.
3.The mid-term exam is not a ______for all the students because it is so easy.
4.Jack disappeared for a few days, and when he came back, he didn’t give any _____of his strange behavior.
5.His parents felt regretful because they thought they were too _____on him.
6.There are some small differences between American English and Britain English. For example, in American English, we often say “on______”(假期) instead of “on holiday”.
7.The car accident was not the driver’s _______(过失) as there was a man suddenly running across the road.
8.It is hard for me to make a _______(决定). Can you tell me what to do?
9.As students, you have to_______ (平衡) work and play, or you might feel very confused.
10.How ________ (尴尬的) I was when I made a mistake with many people looking.
高一英语单词拼写简单题查看答案及解析
Complete the following sentences according to the initials or Chinese.
1.Santa Claus is an imaginary old man with a long white b_____ and a red coat.
2.According to the weather f_____ it will be warm and sunny tomorrow.
3.Sarah didn’t have enough money for the bus f_____, so she decided to walk home.
4.Jack and Max are twins. Seeing the two of them together c_____ me — I totally can’t tell one from the other.
5.There is always a m_____ on the bathroom mirror when Clark has a shower every morning.
6.I would be g_____ if you could send the completed form I need back as soon as possible.
7.The time is fast _____ (接近，靠近) when we shall have to make a decision.
8.Walking along the dark street, Tom heard _____ (脚步声) close behind him, which made him frightened and want to run away.
9.John _____ (犹豫) before he answered because he didn’t know what to say.
10.We’ve got all kinds of _____ (长大衣) here, and you can choose whichever you like.
高一英语单词拼写简单题查看答案及解析
Part Two: Exercises
I. Write out the proper words according to the initial letters or the Chinese given.
1. Have you got an a________ suggestion?
2. Do you take seriously his p________ of a government defeat?
3. Nowadays we r________ increasingly on computers for help.
4. Gardening is a form of r________.
5. He underwent open-heart s________.
6. I can d________ tell you what I will be doing after school.
7. America is rich in natural r________.
8. All the ________ (犯人) have been arrested.
9. He wanted to find out what young people think about the future of ________ (城市) life.
10. There is always a ________ (界限) to what others can do for you.
11. Her ________ (命令) were quickly obeyed.
12. ________ (最终) he was tired of the life there.
13. After the transplant his body ________ (拒绝) the new heart.
14. He has lost the ________ (能力) of speech .
15. Clouds of different ________ (形状) made the sky especially beautiful.
高一英语单词拼写简单题查看答案及解析