2. 外语
  3. Some scientists are dubious of the claim that organisms ______ with age as an inevitable outcome of living.

Some scientists are dubious of the claim that organisms ______ with age as an inevitable outcome of living.

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问题 Some scientists are dubious of the claim that organisms ______ with age as an inevitable outcome of living.
选项 A、depress
B、default
C、deteriorate
D、degrade
答案D
解析 动词辨析。depress意为“使沮丧、使萧条”；default意为“疏怠职责、缺席、拖欠”； deteriorate意为“使恶化”；degrade意为“退化、降级、堕落”。根据with age的提示，此处用 degrade表示“退化，衰老”。
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