假分数的倒数是真分数.______.
当分子分母相同时,它的倒数还是它本身,还是假分数;
故答案为×.
请你判断函数f(x)=3-x2+2x+3的单调区间,并求它的值域.
Kate was not sure_______.
A.that she would play the lead role
B.if she will win an Oscar
C.which gate to go
D.which gate she should go through