函数y=sinxcosx的最小正周期是______．
函数y=sinxcosx=12sin2x，
它的最小正周期是：2π2=π．
故答案为：π
疟疾发热选 ：
A．裂殖子与其释放产物入血
The students are surprised to know that elephants walk _____ tiptoe. [ ]
A. after
B. on
C. in
D. at
