题目内容
【单选题】Beth was________ about visiting his ex-boyfriend; she worried that he might refuse to talk to her.
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【单选题】When humans first traveled into outer space, it was as revolutionary a ________in human culture as the invention of the wheel.
【单选题】Perplexed, she turned and noticed her husband had collapsed and was slumped on the floor behind the counter. She rushed to him and ________his head in her arms.
【单选题】Health experts are now ________ that even a little exercise, such as doing housework or light gardening, is far better than none at all.
关于美国后期殖民地式家具的特点，说法正确的有：
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