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With only about 1, 000 pandas left in th...

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.”

1. The 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

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 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

 

1.B 2.A 3.C 4.D 【解析】 1.语义理解题。从第2段内容可知,“诺亚方舟”工程的目标是把濒临灭绝的动物的蛋(卵)、胚胎、精液和DNA储存在液体氮中,如果某一种动物濒临灭绝时,将来可以重现这一动物。 2.细节题。从第6段第1句话 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  可以做出正确判断。 3.主旨题。从文章内容来看,无论是中国还是世界克隆熊猫还没有成功,所以排除A、B项;D项内容明显与文章内容不符,故排除。所以“探索克隆熊猫的可能性”应该是这篇文章的标题。 4.判断题。此题B项的干扰性较强,但由于它没有说明是Chinese scientists,所以应排除。A、C项明显与原文不符。根据文章第3段第1句可知答案非D莫属。
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Some of the best-known names in the entertainment industry have taken part in an unprecedented telethon to help victims of the terrorist attacks in the United States.

    The benefit(义演), called “America: a Tribute to Heroes,” was sponsored by all four major U.S television networks, ABC,CBS, FOIX and NBC. It was broadcast by three-dozen television, cable and radio networks across the country and aired live to more than a hundred countries around the world.

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    Actors, including Tom Hanks, Julia Roberts, tom Cruise and Clint Eastwood, told stories of heroic acts by people who tried to save others from the burning World trade Center and the Pentagon. Former heavyweight champion Muhammad Ali made a rare public appearance in show of support. The appeals alternated with performances by such popular entertainers a Bruce Springsteen, Mariah Carey, Steve Wonder, Paul Simon and the rock band U—2. They appeared on stages in New York, Los Angeles and London, decorated with hundreds of burning candles.

    Singer Billy Joel sang “ New York State of Mind” with a New York City firefighter’s hat on his piano. Sting dedicated his song “ Gragile” to a friend who died in the World Trade Center. Stevie Wonder condemned hatred in the name of religion before singing his song “ Love’s in Need of Love today”. Pledge phones were manned by dozens of other celebrities, including Jack Nicholson, Meg Ryan, Whoopic Goldberg, Cindy Crawford, Al Pacino and Sylvester Stallone.

    Organizers say the two-hour telethon raised millions of dollars. All participants, from stars to stagehands, worked without pay.

1.Those who appeared on stages were ______.

  A. some best-known names in the USA

  B. some famous singer, film stars and other music entertainers

  C. People who tried to save others from the burning World trade Center and the Pentagon.

  D. Former heavyweight champion Muhammad Ali and Hollywood stars

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B. a concert held by some television networks

C. a television program which lasts a long time

D. a television program for entertainment

3.Which of the following statements is true?

A. Four major U.S. television networks broadcast the benefit

B. The former heavy weight champion Muhammad Ali sang a song to show his support

C. Billy Joel, wearing a firefighter’s hat, played the piano for the listeners and viewers

D. The organizers, stars and people who worked for the benefit didn’t get any money for themselves.

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