A tiger can be tamed unless ________ very young．
catching
to be caught
caught
to be catching
科目：高中英語 來源： 題型：閱讀理解
With only about 1, 000 pandas left in the world, China is desperately trying to clone(克隆) the animal and save the endangered species(物種). That’s similar to what Texas A＆M University researchers have been undertaking(負責) 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(氮). 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 become extinct in over 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years.
Chinese scientists said they grew an embryo 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(過程) could take from three to five years to complete.
“The nuclear transfer(核子移植) 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.”
1. The aim of “Noah’s Ark” project is to_______.
A. make effort 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
2. According to Professor Kraemer, the major problem in cloning pandas would be the lack of _______.
A. available panda eggs B. host animals
C. qualified researchers D. enough money
3. The best title for the passage may be _______.
A. China’s Success in Pandas Cloning
B. The First Cloned Panda in the World
C. Exploring the Possibility to Clone Pandas
D. China — the Native Place of Pandas Forever
4. From the passage we know that _______.
A. Kraemer and his team have succeeded in cloning a cat
B. scientists try to implant a panda’s egg into a tiger
C. Kraemer will work with Chinese scientists in clone researches
D. about two thousand of species will probably die out in about a century
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科目：高中英語 來源： 題型：閱讀理解
Watch out, Yahoo．There’s search engine out there with super speed and accuracy．It’s really cool．
Google is the Web’s largest search engine．In just two years it has gained a reputation for surprising speed and accuracy, delivering exactly what you’re looking for in a second．The site now does this 40 million times a day – a number achieved without spending a penny on a TV or newspaper ad．
Google doesn’t need them．In the past six months alone, the site has won a Webby （the online version of the Oscar） for technical excellence, set a new record for search engines by indexing a billion Web pages．
Yahoo still has 10 times the audience, but Google consistently ranks first in customer satisfaction: 97% of users find what they’re looking for most or all the time．“You see people smile when they use it, like they’ve found something no one else knows about,” says Danny Sullivan, editor of an online newsletter．
No one is smiling more than Larry Page, 27, and Sergey Brin, 26, who seem certain to become billionaires when the company goes public, probable sometime next year．They make a great comedy duo．When they first met as Ph． D．students, the pair say, they found each other horrible – “I still find him horrible,” adds Brin – but were driven together by a computer – science project aimed at coming up with better ways of searching the Web．
The idea behind Google is that traditional search engines are stupid．They think relevance is based on repetition; if you type in a request for Tiger Woods, say, you’ll get websites listed according to how many times those words appear．Not only is this no guarantee of quality, but it’s also open to abuse．If you own a Tiger fan site and want to lead more people to it, simply type his name thousands of times in the site’s source code．
The first paragraph serves to ．
A．compare two websites B．bring out the topic
C．put blame on Yahoo D．give the background of the topic
What does the underlined word “then” in the third paragraph refer to?
A．40 million times． B．Achievements．
C．TV and newspaper ads． D．Web pages．
Which of the following wins greater customer satisfaction?
A．Yahoo． B．Google． C．Page． D．Brin．
It can be inferred that Page and Brin ．
A．work for Google B．a(chǎn)re Tiger fans
C．hated each other D．work for Yahoo
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科目：高中英語 來源： 題型：閱讀理解
With only about 1, 000 pandas left in the world, China is desperately trying to clone(克隆) the animal and save the endangered species(物種). That’s similar to what Texas A＆M University researchers have been undertaking(負責) 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(氮). 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 become extinct in over 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years.
Chinese scientists said they grew an embryo 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(過程) could take from three to five years to complete.
“The nuclear transfer(核子移植) 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.”
The aim of “Noah’s Ark” project is to_______.
A. make effort 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
According to Professor Kraemer, the major problem in cloning pandas would be the lack of _______.
A. available panda eggs B. host animals
C. qualified researchers D. enough money
The best title for the passage may be _______.
A. China’s Success in Pandas Cloning
B. The First Cloned Panda in the World
C. Exploring the Possibility to Clone Pandas
D. China — the Native Place of Pandas Forever
From the passage we know that _______.
A. Kraemer and his team have succeeded in cloning a cat
B. scientists try to implant a panda’s egg into a tiger
C. Kraemer will work with Chinese scientists in clone researches
D. about two thousand of species will probably die out in about a century
查看答案和解析>>
科目：高中英語 來源： 題型：單選題
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