While researchers may not ______ the expansive claims of hard-core vitamin enthusiasts, evidence suggests that the nutrients pla

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问题 While researchers may not ______ the expansive claims of hard-core vitamin enthusiasts, evidence suggests that the nutrients play a much more complex role in assuring vitality and optimal health than was previously thought.

选项 A、authorize
B、license
C、counteract
D、endorse

答案D

解析 authorize批准;license许可,特许;counteract抵消,阻碍;endorse在(票据)背面签名,正式赞同或支持。研究者没有支持那些顽固的维他命狂热者,所以选D。
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