精子和卵细胞相遇是在( )
A:输卵管
B:子宫
C:卵巢
D:阴道
能引起人类患甲癣、脚癣的生物大多数是( )
—But now they just _______ and wait for you to offer them pet food.
函数f(x)=sinxcosx最小值是( )