答案解析:答案为B。本题为细节题。由第二段内容可知,“诺亚方舟”项目的目的在于收集濒临灭绝的动物的卵子、胚胎、精子和DNA,并液体氮将它们储存起来。某些物种灭绝了,将会有足够的基础建设材料再造这些物种。最后一段第二句We're both trying to save animals that face extinction.”又一次提到了这个项目的目的,即拯救濒临灭绝的物种。
2. According to Professor Kraemer, ________.
A. the long time lasting cloning research could be successful.
B. the eggs transfers immediately result in having a baby.
C. the lack of nuclear transfer could be a major problem to have new pandas.
D. if species should die out, basic building blocks would heal them.
答案解析:答案为A。本题为推理题。由倒数第二段第一句话 “…but the lack of available panda eggs could be a major problem”可知,C选项错误。由该段第二句话 “They will probably have to do several hundred transfers to result in one pregnancy (having a baby).”可知,B选项错误。由该段第三句话 “It takes a long time and it's difficult, but this could be groundbreaking science if it works.”可知,这(细胞核移植需要很长时间,而且难度很大,但是一旦成功,便会成为开创性的科学。If certain species should become extinct, …there would be enough of the basic building blocks to reintroduce the species in the future.”,而 D选项 “如果物种灭绝,基础建设材料基础建设材料. The best title for the passage may be_________.
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