题目内容

DNA is one of the most important discoveries in science. DNA is the plan for the human being, as a blueprint is the plan for a building. DNA makes a person look the way he does. A person’s DNA comes from a mixing of his parents’ DNA. That’s why a child looks like his parents. But, besides controlling things such as height and hair color, DNA can also give people diseases. Scientists are now studying DNA to cure diseases.
In the seventies, scientists developed a process called recombinant or RDNA. Although it sounds difficult to understand, RDNA simply means taking DNA from one animal or plant and putting it into another. By doing so, scientists can create new beings. In doing so, scientists can better understand DNA, especially what parts of DNA do what. After they understand DNA, scientists can begin to cure diseases. Often, the new being created will itself be the cure.   Besides curing diseases, RDNA research can also do other things. For example, scientists in Japan have already created “super-trees”. Trees help humans, because they take CO2, which poisons humans, from the air and turns it into oxygen, which lets humans breathe. “Super-trees” do this too, but do it much faster. As things such as cars and factories have already put much CO2 in the area, “super-trees” are badly needed.
Unfortunately, there is a serious danger in RDNA research. Scientists want to create animals to cure old diseases, but these new animals may also create new diseases. It will be a serious problem if the animals escape from the science laboratory and into nature. As these animals are not natural, they may let loose many new powerful diseases.
As a result, RDNA research will create many solutions, but it will also create many problems.
【小题1】 From the passage, we can know that a boy looks like his parents because______.

A．he is son of his parents.
B．his parents’ DNA decides his appearance.
C．he has received DNA from his father or his mother.
D．scientists have put some of his parents’ DNA into him.
【小题2】What does the underlined expression “let loose” probably mean?
A．let … go freeB．get rid of
C．absorbD．survive
【小题3】 What is the best title for the passage?
A．The DNA Research in Japan
B．A New Way of DNA Research in Japan.
C．The Causes and Effects of DNA Research
D．The Advantages And Disadvantages of RDNA
【小题4】 The following statements are true about RDNA research EXCEPT ______.
A．the research has been stopped because the created animals carry viruses
B．“super-trees” might be widely planted around the world
C．scientists have not completely understood DNA
D．RDNA research will benefit human beings a lot
【小题5】You might find this passage in / on a ________.
 
A．fashion magazineB．novelC．scientific newspaperD．sports newspaper


【小题1】B
【小题1】A
【小题1】D
【小题1】A
【小题1】C

解析

练习册系列答案
相关题目

With only about 1, 000 pandas left in the world, China is desperately trying to clone the animal and save the endangered species. That’s a move similar to what a Texas A & M University researchers have been undertaking for the past five years in a project called “Noah’s Ark”.
Noah’s Ark is aimed at collecting eggs, embryos(胚胎), semen and DNA of endangered animals and storing them in liquid nitrogen. If certain species should become extinct, Dr. Duane Kraemer, a professor in Texas A & M’s College of Veterinary Medicine, says there would be enough of the basic building blocks to reintroduce the species in the future.
It is estimated that as many as 2, 000 species of mammals, birds, reptiles will become extinct in over 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years.
This week, Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit. They are now trying to implant the embryo into a host animal. The entire procedure could take from three to five years to complete.
“The nuclear transfer of one species to another is not easy, and the lack of available(capable of being used) panda eggs could be a major problem,” Kraemer believes. “They will probably have to do several hundred transfers to result in one pregnancy (having a baby). It takes a long time and it’s difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort,” adds Kraemer, who is one of the leaders of the Project at Texas A & M, the first-ever attempt at cloning a dog.
“They are trying to do something that’s never been done, and this is very similar to our work in Noah’s Ark. We’re both trying to save animals that face extinction. I certainly appreciate their effort and there’s a lot we can learn from what they are attempting to do. It’s a research that is very much needed.”
【小题1】 The aim of “Noah’s Ark” project is to _______.

A．make efforts to clone the endangered pandasB．save endangered animals from dying out
C．collect DNA of endangered animals to studyD．transfer the nuclear of one animal to another
【小题2】 According to Professor Kraemer, the major problem in cloning pandas would be the lack of _______.
A．available panda eggsB．host animalsC．qualified researchersD．enough money
【小题3】The best title for the passage may be _______.
A．China’s Success in Pandas CloningB．The First Cloned Panda in the World
C．Exploring the Possibility to Clone Pandas D．China —the Native Place of Pandas Forever
【小题4】From the passage we know that _______.
A．Kraemer and his team have succeeded in cloning a dog
B．scientists try to implant a panda’s egg into a rabbit
C．Kraemer will work with Chinese scientists in clone researches
D．about two thousand of species will probably die out in a century

What exactly is intelligence? There aren’t any easy answers．Despite the progress that has been made in genetics and psychology, human intelligence has remained one of the most controversial areas of modern science，until now, that is, for the discovery of a gene linked to intelligence has made the experts think again．

Robert Plomin of the Institute of Psychiatry in London and his colleagues in the US have been looking into genetic make-up．From their research, they have discovered that a slightly different gene is more common in those with a high IQ．Plomin analyzed DNA from two groups of 51 children aged between 6 and 15．What he found was that the first group had an IQ of 136, putting them in the top 5% of the population, while the other group had an average IQ of 103．An analysis of their genes showed that 32% of children in the higher group had the gene in question, while only 16% in the second group did．However, there is a lot more research to be done, and Plomin himself is cautious at this early stage．He suggests that there are probably many genes that contribute to intelligence, rather than just one. Several studies have shown a strong link between IQ and career success, although some psychologists remain unconvinced about this．Professor Michael Rowe, who has written a book called Genius Explained, is one of these．“The people with the highest IQs are not usually the ones who do best in their careers．”

Many psychologists now believe that when it comes to intelligence, IQ isn’t everything．Many alternative views have been put forward recently．One example is the idea of multiple intelligences, which was developed in the 1980s by Harvard psychologist Howard Gardner．This offers a much broader view than the IQ theory, including creativity and communication skills as relevant factors in intelligence．

Tony Buzan, brain expert and author of Master your Memory, is enthusiastic about this belief, arguing that true geniuses do indeed appear to combine high levels of each type of intelligence．He lists Alexander the Great, Pablo Picasso and Albert Einstein as examples．At the same time, Buzan believes that everyone can develop their intelligence, only if they take the trouble to exercise their brain．Perhaps there’s hope for us all!

1.What does the underlined word “This” in Paragraph 3 refer to?

A．The development of intelligence

B．The idea of multiple intelligences

C．IQ isn’t everything for intelligence

D．Alternative views have been put forward

2.Why does the author use data in Paragraph 2?

A．To make a suggestion．       B．To draw a conclusion

C．To prove an idea．               D．To give an example

3.What can we learn from the passage?

A．Robert Plomin confirms genes have something in common

B．Howard Gardner thinks intelligence includes various factors

C．Michael Rowe approves of a strong link between IQ and career

D．Tony Buzan agrees geniuses exercise brain to improve intelligence

4.What might be the best title of the passage?

A．The relationship between genes and intelligence

B．IQ benefits a lot from high intelligence

C．How to develop intelligence．

D．What makes intelligence.

 

With only about 1,000 pandas left in the world, China is desperately trying to clone the animal and save these in a dangerous situation. That's a move similar to what a Texas A & M University researchers have been undertaking for the past five years in a project called "Noah's Ark".

Noah's Ark is aimed at collecting eggs, embryos(???), semen and DNA of these animals and storing them in liquid nitrogen. If certain species should become extinct, Dr. Duane Kraemer, a professor in Texas A & M's College of Veterinary, Medicine, says there would be enough of the basic building blocks to reintroduce the species in the future.

It is estimated that as many as 2, 000 species of mammals, birds and reptiles will probably become extinct in over 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years.

This week, Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit. They are now trying to implant the embryo into a host animal.

The entire procedure could take from three to five years to complete.

"The nuclear transfer of one species to another is not easy, but the lack of available panda eggs could be a major problem," Kraemer believes. "They will probably have to do several hundred transfers to result in one pregnancy (having a baby). It takes a long time and it's difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort," adds Kraemer, who is one of the leaders of the Project at Texas A&M, the first-ever attempt at cloning a dog.

"They are trying to do something that's never been done, and this is very similar to our work in Noah's Ark. We're both trying to save animals that face extinction. I certainly appreciate their effort and there's a lot we can learn from what they are attempting to do. The cooperation between us is very much needed."

67. The final aim of "Noah's Ark" project is to___________.       .

A. make efforts to clone the endangered pandas 

B. save endangered animals from dying out

C. collect DNA of endangered animals to study 

D. transfer the nuclear of one animal to another

68. According to Professor Kraemer, ___________.

A. the long time lasting cloning research could be successful.

B. the eggs transfers immediately result in having a baby.

C. the lack of nuclear transfer could be a major problem to have new pandas.

D. if species should die out, basic building blocks would heal them.

69. The best title for the passage may be______________.

A. China's Success in Pandas Cloning

B. Helping Ways to Avoid Extinction

C. Exploring the Possibility to Clone Pandas

D. The Practice in Noah's Ark

70. From the passage we know that______________.

A. Kraemer and his team have succeeded in cloning a panda

B. scientists try to implant a panda's egg into a rabbit

C. Kraemer will work with Chinese scientists in clone researches

D. about two thousand species are to die out in a century

 

DNA is one of the most important discoveries in science. DNA is the plan for the human being, as a blueprint is the plan for a building. DNA makes a person look the way he does. A person’s DNA comes from a mixing of his parents’ DNA. That’s why a child looks like his parents. But, besides controlling things such as height and hair color, DNA can also give people diseases. Scientists are now studying DNA to cure diseases.

    In the seventies, scientists developed a process called recombinant or RDNA. Although it sounds difficult to understand, RDNA simply means taking DNA from one animal or plant and putting it into another. By doing so, scientists can create new beings. In doing so, scientists can better understand DNA, especially what parts of DNA do what. After they understand DNA, scientists can begin to cure diseases. Often, the new being created will itself be the cure.    Besides curing diseases, RDNA research can also do other things. For example, scientists in Japan have already created “super-trees”. Trees help humans, because they take CO2, which poisons humans, from the air and turns it into oxygen, which lets humans breathe. “Super-trees” do this too, but do it much faster. As things such as cars and factories have already put much CO2 in the area, “super-trees” are badly needed.

    Unfortunately, there is a serious danger in RDNA research. Scientists want to create animals to cure old diseases, but these new animals may also create new diseases. It will be a serious problem if the animals escape from the science laboratory and into nature. As these animals are not natural, they may let loose many new powerful diseases.

     As a result, RDNA research will create many solutions, but it will also create many problems.

1. From the passage, we can know that a boy looks like his parents because______.

A. he is son of his parents.       

B. his parents’ DNA decides his appearance.

C. he has received DNA from his father or his mother.

D. scientists have put some of his parents’ DNA into him.

2.What does the underlined expression “let loose” probably mean?

A. let … go free                B. get rid of      

C. absorb                     D. survive

3. What is the best title for the passage?

A. The DNA Research in Japan       

B. A New Way of DNA Research in Japan.

C. The Causes and Effects of DNA Research

D. The Advantages And Disadvantages of RDNA

4. The following statements are true about RDNA research EXCEPT ______.

A. the research has been stopped because the created animals carry viruses

B. “super-trees” might be widely planted around the world

C. scientists have not completely understood DNA

D. RDNA research will benefit human beings a lot

5.You might find this passage in / on a ________.

 A. fashion magazine   B. novel    C. scientific newspaper  D. sports newspaper

 

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网