题目

It is (extreme) beautiful and you can experience the indigenous Australia there more than anywhere else. (所给词的适当形式填空） 答案：【1】extremely13．下列函数没有零点的是（　　）A．$f（x）={log_2}^x-3$B．$f（x）=\sqrt{x}-4$C．f（x）=$\frac{1}{x-1}$D．f（x）=x2+2x