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【1】Many Americans fail to lose weight probably because _______ .

A. they lack confidence

B. they do exercise alone

C. they are under great pressure

D. they don’t get enough exercise

【2】From the text, we can learn that if you join the gym, _______ .

A. you’ll lose weight safely but slowly

B. you’ll struggle with workout routines

C. you’ll be advised to pay attention to nutrition

D. you’ll be advised to have nothing in between workouts

【3】How much do a couple have to pay if they join the gym today?

A. $800. B. $500. C. $900. D. $1,000.

【4】This text is most probably taken from a ________ .

A. newspaper B. magazine

C. website D. textbook

【题目】【原创】The first theories and experiments with cloning began in the late 1880s as scientist sought to prove their theories about how the genetic material inside cells worked. Discoveries about the nature of DNA in the 1940s made it possible for cloning experiments to progress. In 1944 it was discovered that genetic information for each cell was kept in the cell’s DNA. When Oswald Avery found this genetic information, it gave scientists new ways to try to clone animals by using that genetic blueprint(生物细胞的模型).

The first cloned animals were northern leopard frogs that were cloned by Thomas J. King and Robert Briggs in 1952. King and Briggs believed, based on their clones, that young cells were more practical for the cloning process. Cells that were taken from adults resulted in abnormally developed tadpoles(蝌蚪). The next successful cloning experiments also resulted in cloned frogs. John Gurdon cloned South African frogs in 1962. His use of adult cells disproved the previous theory that only young cells could be used in the cloning process with success.

While animal cloning had been the focus of cloning experiments, the 1960s also saw other types of cloning. In 1964, F. C. Steward took an adult root cell from a carrot plant and successfully cloned the plant. Throughout the rest of the 1960s, scientists continued to clone frogs and to discover more about DNA. The first gene was discovered in 1969.

In 1977, the first cloned mice embryos were created. The first mammal was cloned in 1984. The cloned sheep was quickly followed in 1985 with cloned cattle embryos. A cow clone was created in 1986 and several calves in 1993. That same year, human embryos were cloned for the first time. In 1995 and 1996, sheep were cloned, including the famous Dolly.

【1】The first paragraph serves as a(n) __________________________.

A. explanation B. conclusion

C. comment D. background

【2】When as the first plant successfully cloned?

A. In 1952 B. In 1960

C. In 1964 D. In1969

【3】How is the passage organized?

A. In order of frequency

B. In order of time

C. In order of importance

D. In order of preference

【题目】WELLINGTON, New Zealand (AP) ---- About 140 pilot whales that stranded(使...搁浅) themselves on a remote stretch of New Zealand beach have died, but conservation workers and volunteers are hoping the remaining 60 or so will survive after they managed to get them refloated, an official said Saturday.

The geography of Farewell Spit on the South Island seems to work against whales, which regularly become stranded there. The stranding of 198 whales on Friday was one of the largest in recent years and inspired 80 workers and volunteers to help out.

By late Saturday, 140 of the whales had died, said Department of Conservation area manager Andrew Lamason.

He said the workers and volunteers worked throughout the day to keep the surviving whales watered and covered before refloating them during Saturday nights high tide.

Weve had a really good crew of volunteers, and people have been wanting to come from all over the country, Lamason said.

He said the surviving whales had moved to deeper water. But he cautioned that although hopes for their survival were high, whales had been refloated in the past only to return and get stranded again.

Lamason said the scale(规模) of the stranding has been tough on the helpers, both physically and mentally.

Its very sad, theyre very intelligent animals, he said. The common view is that its part of nature.

The focus will now turn to the dead whales, and the enormous task of dealing with the remains, Lamason said, adding that in the past helpers have typically buried them in the sand, but that hes not sure what the approach will be this time.

He said the department had been experimenting with moving the the dead whales into the water, which has the advantage of providing food for other sea creatures.

【1】What is the exact number of whales stranded last Friday?

A. 140. B. 60. C. 80. D. 198.

【2】 Why did the volunteers have to wait until Saturday before they could refloat the whales?

A. Because they were very busy on Friday.

B. Because they had to wait for the sea water to rise.

C. Because the whales were too intelligent.

D. Because the whales were buried deep in the sand.

【3】Which of the following words can be used to describe Lamasons attitude towards the result of refloating the whales?

A. Doubtful. B. Optimistic.

C. Positive. D. Careless.

【4】What did Lamason say about the feelings of the workers and volunteers?

A. They were very happy to see so many whales.

B. They thought refloating the whales was not a hard job.

C. They were physically tired and emotionally hurt.

D. They believed that this is very natural.

【5】How will the volunteers deal with the dead whales this time according to Lamason?

A. They will bury them in the sand.

B. They will throw them into the ocean.

C. They do not have any exact idea yet.

D. They will feed them to other sea creatures.

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