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5. begins singing and dancing

6. celebrate the life of the person who has just died P52Ex.2

Learned to play drums and trumpet at age 12; Got a job in best band in town at age 16; P52Ex.3

Started making records at age 23; Achievements:

Became a huge star and remained popular for almost 50 years; Acted in over 50 movies;

Became a goodwill ambassador for the USA; Took part in the civil rights movement. Good qualities：

Even though he was poor, he never turned to crime to make a living; He was a great musician; He loved entertaining people;

He could communicate with people from all sorts of backgrounds; He cared about civil rights issues;

He lived a simple life despite his rights and fame;

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He continued to work all his life.

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Unit2

课内练习答案（P12Ex.1）

1. The first use is to produce commercial quantities of plants. The second is to research on new plants specials and do medical research on animals. 2. Cloning plants is straightforward, but the cloning of animals is very complicated.

Problems or dangers of cloning 3. The first clone from an adult animal was Dolly the sheep. She died in 2003.

4. Cloning is controversial in some countries for moral and religious reasons. P12Ex.2

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Evil leaders may want to clone themselves.

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Animal clones may develop the illnesses of older animals. Animal clones may die younger than the donor animals. There are moral objections to cloning human being. Advantages of cloning

Medical cloning could produce cures for serious illness in humans. Cloning plants can be useful for research on new plant species. Cloning plants can produce plants of similar quality for sale. Cloning can help save endangered animals. P12EX.3

I think the writer is impartial because he / she does not state any personal opinion about cloning. P13Ex.1

1differ 2cast 3accumulate 4exact 5altogether 6objections 7un dertake 8moral .P13Ex.2

1 straightforward 2 arbitrary 3 commercial 4 made an objection to 5 obtain 6 will forbid P13Ex.3

1attain 2complicated 3fate 4carrier 5cast 6reform 7accumulate

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