2. 外语
  3. Some scientists are dubious of the claim mat organisms______with age as an inevitable outcome of living.

Some scientists are dubious of the claim mat organisms______with age as an inevitable outcome of living.

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问题 Some scientists are dubious of the claim mat organisms______with age as an inevitable outcome of living.
选项 A、depress
B、default
C、degrade
D、deteriorate
答案C
解析 形近词词义辨析。degrade“降低，降级，退化”；deteriorate“恶化，变坏”；default“拖欠，不履行义务”；depress“压抑，使沮丧”。根据句意，答案应在degrade和deteriorate之间选择。两词均有“退化，恶化”的意思，但degrade强调“功能的退化”，deteriorate强调“身体健康状况的恶化”，且程度较强。结合语境，可知degrade更符合。故答案为C。
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