题目

.  — How is the result, doctor?    — Well, your health is ______ good, but you do have a few minor problems.    A. occasionally              B. frequently         C. generally                 D. regularly 答案：C对于函数的性质，①是以为周期的周期函数   ②的单调递增区间为，③的值域为    ④取最小值的的取值集合为其中说法正确的序号有_____________.