雌激素的副作用不包括（）
A.白带增多
B. * * 肿胀
C.子宫萎缩
D.增加乳癌发生率
E.增加子宫癌发生率
参考答案：C
以下结构体类型说明和变量定义中正确的是
A) typedef structint n；char c；REC；REC t1，t2；B) struct REC；int n；char c；；REC t1，t2；C) typedef struct REC；int n=0；char c='A'；t1，t2；D) structint n；char c；REC；REC t1，t2；
—Good news. We will have a _______ holiday.
—I've heard of it. But it's coming in ______[ ]
A. three days; three days' time
B. three days'; three day's
C. three-day; three days
D. three days; three-day time
