选出正确的读音
蒸(zhēn zhēng)____ 叨(diāo dāo)____
乎(hū fū )____ 至(zhì zì)____
分母是100的分数叫做百分数.
It has a ____ ____.(大嘴)
函数f(x)=lnx﹣2x的零点所在的区间是( )