问题
选择题
The lively boy suddenly appeared to be ________ quiet, so his mother knew something unusual must have happened.
A．casually
B．consequently
C．curiously
D．constantly
答案
答案：C
考查副词辨析。Casually 随便的，偶然的consequently 因此，结果 curiously好奇地 constantly持续地
句意为那个活泼的男孩突然看起来出奇地安静，因此他的妈妈知道不寻常的事情发生了。