单项选择题
A.stable
B.smooth
C.superficial
D.shallow
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.
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.