PASSAGE FOUR Why do scientists examine the genomes of astronauts?

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问题 PASSAGE FOUR
Why do scientists examine the genomes of astronauts?

选项

答案To reduce risks and design countermeasures.

解析 由题干中的examine the genomes定位至第四段第一句。该句指出,为了减小每个人的风险,应该检查他们的基因组来制订对策预防潜在问题。故答案为To reduce risks and design countermeasures.
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