单项选择题
Stone does not（）, and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.
A.crack B.decay C.destroy D.crush
单项选择题 He had a（）look in his eyes. He must have been shocked.
单项选择题 While admitting that this forecast was（）exaggerated, the scientists warned against treating it as a cry of wolf.
单项选择题 In the advanced course students must take performance tests at monthly（）
