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发布时间: 1970-01-01

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1最佳选择题 3分

Biotechnology Biotechnologyinoneformoranotherhasf

  • A. when they could walk on their feet
  • B. before they could plant their own crops
  • C. after they realized that they could raise their own animals
  • D. as soon as scientists began their studies on biotechnology
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本题解析: 暂无解析

2最佳选择题 3分

Biotechnology Biotechnologyinoneformoranotherhasf

  • A. People made beer by fermenting solutions of malt and hops.
  • B. Bakers used flour and sugar to make a firm, thin cracker which is delicious.
  • C. Workers converted milk into cheese.
  • D. Animal breeders mated appropriate pairs of animals to magnify their traits.
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本题解析: 暂无解析

3最佳选择题 3分

Biotechnology Biotechnologyinoneformoranotherhasf

  • A. new types of animals
  • B. crops that are more nutritious and naturally pest-resistant
  • C. stronger and more productive offspring of animals
  • D. rapidly growing world population
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本题解析: 暂无解析

4最佳选择题 3分

Biotechnology Biotechnologyinoneformoranotherhasf

  • A. people have different responses to the question " What is biotechnology"
  • B. the question "What is biotechnology" has been posed to many people
  • C. responses to the question "What is biotechnology" should be made on the spot
  • D. only these who are asked the question "what is biotechnology" can answer it
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本题解析: 暂无解析

5最佳选择题 3分

Biotechnology Biotechnologyinoneformoranotherhasf

  • A. to change the DNA of human beings
  • B. to produce more milk by increasing the number of cows
  • C. to increase the functions of various cells and organisms
  • D. to find new human molecules
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本题解析: 暂无解析

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