It is the news most parents of the hope that ...

It is the news　　 most parents of the hope that there is a safe and socially approved

road to a kind of life they themselves have not had, but their children can.

高三英语单项填空简单题查看答案及解析

AIDS may be one of the most undesirable diseases in the world. Luckily, there is now hope for AIDS patients.

According to a recent paper published in the New England Journal of Medicine，Chinese scientists have successfully used CRISPR technology -a method of gene editing-to treat a patient with HIV. While it may not have cured the patient fully, it still represents a huge step forward in fighting the disease.

The patient was a 27-year-old Chinese man who was diagnosed with both AIDS and acute lymphoblastic leukemia (淋巴母细胞白血病), a type of blood cancer. Despite his bleak situation, doctors offered him a little hope: a bone marrow (骨髓) transplant to treat his cancer and an experimental treatment for his HIV. They used this chance to edit the DNA in bone marrow stem cells (干细胞) from a donor before transplanting the cells into the patient.

Specifically, the treatment involved using the gene-editing tool CRISPR-Cas9 to delete a gene known as CCR5, which encodes (给…编码) a protein that HIV uses to get inside human cells. Without the gene, HIV is unable to enter cells. Talking about the gene, lead scientist Deng Hongkui told CNN, “After being edited, the cells and the blood cells they produce have the ability to resist HIV infection.” Nineteen months after the treatment, the patients leukemia was in complete remission( 缓 解 ) and donor cells without CCR5 remained, according to the research paper.

Though the transplant didn't cure the man’s HIV, it still showed the effectiveness of gene-editing technology, as there was no indication of any unintended genetic changes-a major concern with past gene-editing treatment experiments. Amesh Adalja, a senior scholar at the Johns Hopkins Center for Health Security in the United States, who was not involved in the study, praised the treatment. “They did a very creative experiment, and it was safe,” he told Live Science. “It should be viewed as a success.”

Deng believes gene-editing technology could “bring a new dawn” to blood related diseases such as AIDS and sickle-cell anaemia ( 镰 状 细 胞 贫 血 ). “Thanks to this new technology, the goal of a functional cure for AIDS is getting closer and closer,” he said.

1.The underlined word “bleak” in Paragraph3 probably means “______”.

A.hopeless

B.unstable

C.embarrassing

D.unique

2.How did the treatment fight against HIV?

A.By identifying and killing HIV.

B.By changing the structure of HIV.

C.By preventing HIV entering cells.

D.By removing a protein HIV feeds on.

3.What is the result of the treatment?

A.Gene-edited cells are able to resist HIV infection.

B.The number of cells infected by HIV has decreased.

C.CCR5 and other genes in the patient's cells are changed.

D.Unintended genetic changes have taken place in the patient's cells.

4.What can we know about the experiment?

A.It pointed out the problems of gene treatment.

B.It provided a new way to cure AIDS patients fully.

C.It could offer a safe treatment for blood-related diseases.

D.It was the first example to use gene-editing tool to treat AIDS.

高三英语阅读理解困难题查看答案及解析

AIDS may be one of the most undesirable diseases in the world. Luckily, there is now hope for AIDS patients. According to a recent paper published in the New England Journal of Medicine, Chinese scientists have successfully used CRISPR technology-a method of gene editing-to treat a patient with HIV. While it may not have cured the patient fully, it still represents a huge step forward in fighting the disease.

The patient was a 27-year-old Chinese man who was diagnosed with both AIDS and acute lymphoblastic leukemia, a type of blood cancer. Despite his bleak situation, doctors offered him a glimmer of hope: a bone marrow (骨髓) transplant to treat his cancer and an experimental treatment for his HIV.

They edited the DNA in bone marrow stem cells from a donor before transplanting the cells into the patient. Specifically, the treatment involved using the gene-editing tool CRISPR-Cas9 to delete a gene known as CCRS, which encodes a protein that HIV uses to get inside human cells. Without the gene, HIV is unable to enter cells. Talking about the gene, lead scientist Deng Hongkui told CNN, “After being edited, the cells-and the blood cells they produce-have the ability to resist HIV infection.” Nineteen months after the treatment, the patient’s leukemia was in complete relief and donor cells without CCR5 remained, according to the research paper.

Though the transplant did not cure the man’s HIV, it still showed the effectiveness of gene-editing technology, as there was no indication of any unintended genetic alterations (改变) -a major concern with past gene therapy experiments.

Amesh Adalja, a senior scholar at the Johns Hopkins Center for Health Security in the United States, who was not involved in the study, praised the treatment. “They did a very innovative experiment, it was safe,” he told Live Science. “It should be viewed as a success.”

Deng believes gene-editing technology could “bring a new dawn” to blood-related diseases such as AIDS and sickle cell anemia. Thanks to this new technology, “the goal of a functional cure for AIDS is getting closer and closer,” he said.

1.How did the new treatment fight against HIV?

A.By preventing HIV from entering cells. B.By changing the structure of HIV.

C.By removing a protein that HIV feeds on. D.By identifying and killing HIV.

2.What was the result of the treatment?

A.CCR5 and other genes in the patient’s cells were changed.

B.Some of the patient’s blood cells could resist HIV infection.

C.HIV could no longer get into the patient’s cells.

D.The donor cells without CCR5 disappeared finally.

3.What do we know about the experiment?

A.It has provided an innovative way to cure AIDS patients.

B.It pointed out the problems of gene therapy for AIDS.

C.It’s the first experiment to use gene-editing technology to treat AIDS.

D.It could offer a safe treatment for blood-related diseases.

高三英语阅读理解中等难度题查看答案及解析

One of the most popular beliefs in parenting is the so﹣called Mozart effect， which says that listening to music by the Austrian composer Wolfgang Mozart can increase a child's intelligence． Some pregnant women have even gone so far as to play Mozart recordings on headphones pressed against their bellies． And it's not hard to see how Mozart's name became associated with accelerated development． He was history's greatest child genius， performing astonishing music for kings and queens at an age when many of us were content with tuneless singing "I'm a Little Teapot"．

So， if you have kids or you're expecting to have them， how seriously should you take the Mozart effect？ Will the child who doesn't listen to Mozart in the cradle （摇篮） be limited to an ordinary life？ Are you a bad parent if your kids don't know about any works of Mozart？

Relax． There is no scientific evidence that listening to Mozart improves children's cognitive abilities． The whole idea comes from a small study done in 1993， which found that college students who listened to Mozart's Sonata for Two Pianos in D Major （K 448）showed some improvement in a test of spatial （空间的） skills． This finding was later described as something extremely amazing by a musician， Don Campbell， in a book． Campbell's claims about the super powers of Mozart's music were repeated endlessly in the media and fueled a craze for Mozart﹣based enrichment activities． In 1998， for example， the governor of Georgia in the USA requested funds to send classical﹣music CDs to all parents of newborns in the state．

Since then， scientists have examined the claim that Mozart increases intelligence and found no evidence for it． The original experiment with college students was reviewed in 1999， and the increase in the students' spatial skills was found to be negligible． In 2007 the German Federal Ministry of Education and Research asked a team of experts to examine the scientific literature regarding Mozart and child development， and they found no reason to believe that it increased intelligence．

1.People relate Mozart to children's intelligence development because he　　　 　．

A.owned extraordinary music talent.

B.could perform music as a child.

C.offered music to pregnant women.

D.was an royal Austrian composer.

2.What can we know about the small study in 1993？

A.It added to the popularity of Mozart's music．

B.It found no evidence for supporting Mozart effect．

C.It helped college students make academic progress．

D.It urged Georgia's governor to spread classical music．

3.What does the underlined word "negligible" probably mean？

A.Sudden．

B.Insignificant．

C.Average．

D.Steady．

4.What can be the best title for the text？

A.New Findings： Mozart Effect to Be Proved.

B.Secrets Uncovered： History of Mozart Effect.

C.Does Listening to Mozart Make Kids Smarter？

D.How Does Mozart Improve Kids' Intelligence？

高三英语阅读理解中等难度题查看答案及解析

It is hoped that there will be ____ time in the future when ____ man can defeat cancer.

高三英语单项填空中等难度题查看答案及解析

—Though it __________ in the desert most of the year, people still live there.

—That’s the case. They say east or west home is the best.

A．hasn’t rained B． didn’t rain C．doesn’t rain D．hadn’t rained

高三英语单项填空中等难度题查看答案及解析

It is hoped that this project _____ by the end of 2014 will be a popular tourist attraction of the city.

A. being accomplished 　                                  B. to be accomplished

C. will be accomplished  　                                 D. accomplished

高三英语单项填空中等难度题查看答案及解析

It is hoped that this project________ by the end of 2017 will be a popular tourist attraction of the city.

A. being accomplished　　　　　　　　　　　　 B. to be accomplished

C. will have been accomplished　　　　　　 D. accomplished

高三英语单项填空中等难度题查看答案及解析

It is one of the most annoying words in the English language and it seems there is no escaping it. The word "huh?”is in worldwide use, a study found.

Researchers discovered that languages spoken in countries from Ghana and Laos to Iceland and Italy all include "huh?", or something that sounds very like it. They said that while the study may sound silly. The word is an absolutely necessary part of speech. Without it and similar words, it would be impossible to show that we haven't heard or understood what had been said and this would lead to constant misunderstandings.

But while other words used in the same context, such as “sorry” or “what”, vary widely across languages, “huh?” remains unchanged.

The Dutch researchers carefully studied ten languages from around the world, including Siwu, which is spoken in Ghana, and an Australian Aboriginal language, as well as Italian, Spanish, Dutch and Mandarin Chinese.

They analyzed tapes of recorded conversations for words that sounded like “huh?” and were used to request that whatever had just been said be repeated. All contained a version of “huh?”. The word was also found in another 21 languages. While there were subtle differences in each country, all sounded basically the same.

This is surprising because normally unrelated languages will use very different words to describe the same thing. For instance, the Japanese for dog is “inu”, while the French is “chien”.It is thought that

languages around the world have developed their own version of “huh?” because the sound is quick and simple to form, as well as being easily understood.

The researchers, said that it might seem unimportant to carry out scientific research into a word like “huh?” but in fact this little word is an essential tool in human communication. They also have an answer for those who claim that “huh?” isn't a word. They say that it qualifies because of the small differences in its pronunciation in different languages. It also can be considered a word because it's something we learn to say, rather than a grunt or cry that we are born knowing how to make.

1.According to researchers, the word “huh?” is very important in speech because of　　 .

A. its stable meaning in language development.

B. its important function in communication

C. its simple and easy sound and spelling

D. its popularity in every language

2.What is the natural response if you hear the lady you're speaking to say "huh?"?

A. You should ask her to repeat what she says before that.

B. You should apologize to her for speaking in a low voice.

C. You should invite her to share her different views politely.

D. You should try to repeat what you've just said in a clearer way.

3.The main method used in the research of "huh?”was　　　 .

A. interviewing language experts in universities.

B. talking with people from ten different countries.

C. analyzing the recorded conversations in different languages.

D. comparing different words with the same meaning in different languages.

4.What is the purpose of the passage?

A. To inform readers about research on the worldwide used word "huh?"

B. To argue that “huh?” is the most important word in every language

C. To entertain readers by relating similar idioms in different languages

D. To instruct readers of the differences of "huh?”in different languages

高三英语阅读理解中等难度题查看答案及解析

It is one of the most annoying words in the English language and it seems there is no escaping it．The word “huh?” is in worldwide use, a study found.

Researchers discovered that languages spoken in countries from Ghana and Laos to Iceland and Italy all include “huh?”, or something that sounds very like it. They said that while the study may sound silly，the word is an absolutely necessary part of speech. Without it and similar words, it would be impossible to show that we haven’t heard or understood what had been said and this would lead to constant misunderstandings.

But while other words used in the same context, such as “sorry” or “what”, vary widely across languages, “huh?” remains unchanged.

The Dutch researchers carefully studied ten languages from around the world, including Siwu, which is spoken in Ghana, and an Australian Aboriginal language, as well as Italian, Spanish, Dutch and Mandarin Chinese.

They analysed tapes of recorded conversations for words that sounded like‘‘huh?”and were used to request that whatever had Just been said be repeated. All contained a version of “huh?” The word was also found in another 21 languages. While there were subtle differences in each country, all sounded basically the same.

This is surprising because normally unrelated languages will use very different words to describe the same thing. For instance, the Japanese for “dog” is “inu”, while the French is “chien”. It is thought that languages around the world have developed their own version of “huh?” because the sound is quick and simple to form, as well as being easily understood.

The researchers，said that it might seem unimportant to carry out scientific research into a word like“huh?” but in fact this little word is an essential tool in human communication．They also have an answer for those who claim that “huh?” isn’t a word. They say that it qualifies because of the small differences in its pronunciation in different languages. It also can be considered a word because it’s something we learn to say, rather than a grunt or cry that we are born knowing how to make.

1. According to researchers，the word “huh?” is very important in speech because _________．

A. its stable meaning in language development

B. its important function in communication

C. its simple and easy sound and spelling

D. its popularity in every language

2.What is the natural response if you hear the lady you’re speaking to say “huh?”?

A. You should ask her to repeat what she says before that.

B. You should apologize to her for speaking in a low voice.

C. You should invite her to share her different views politely.

D. You should try to repeat what you’ve just said in a clearer way.

3.According to researchers, “huh?”should be considered a word．rather than a sound because_________ .

A. it is listed in most dictionaries

B. it is something humans learn to say

C. there is a clear and consistent spelling of the word

D. it is pronounces quite differently around the world

4.What is the purpose of the text?

A. To inform readers about research on the worldwide used word “huh?”.

B. To argue that “huh?” is the most important word in every language．

C. To entertain readers by relating similar idioms in different languages．

D. To instruct readers of the differences of “huh?” in different languages．

高三英语阅读理解中等难度题查看答案及解析