5. A. protection

　　B. prevention

　　C. preparation

　　D. presentation

　　6. A. noisy

　　B.

　　wealthy

　　C. peaceful

　　D. primitive

　　7. A. unless

　　B. so

　　C. but

　　D. or

　　8. A. looking around

　　B. stepping forward

　　C. getting about

　　D. breaking in

　　9. A. followed

　　B. laughed

　　C.

　　doubted

　　D. pointed

　　10. A. carried

　　B. relied

　　C. moved

　　D. worked

　　11. A. improves

　　B. helps

　　C. counts

　　D. matters

　　12. A. delayed

　　B. cancelled

　　C. started

　　D. continued

　　B

　　(课文改编)Scientists have successfully cloned the first human embryo, which has caused much debate. Some point out 1.__________ cloning can be used to save human lives, while some disagree and afraid that some day in the future cloning will cause many problems to us humans 2.__________ moral problems.Cloning is producing an exact copy of a plant 3.__________ an animal using its cells. The first mammal to be cloned successfully from an adult cell was Dolly the sheep.The scientists 4.__________ created Dolly were praised for their wonderful scientific advance and some are now considering cloning human beings. 5.__________， some people think that cloning human embryos with the intention of destroying them shows no respect 6.__________ human life. But it is good news for those who can't have a baby. In China, scientists have focused 7.__________ efforts on cloning animals, as well as cloned tissues to be used in medical treatment. China has succeeded 8.__________ producing clones of cows and goats and continues to research ways in which cloning can benefit mankind.

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