⑴____ A.large B.March C.quarter D.far
⑵____ A.moon B.noon C.cook D.food
⑶____ A.twice B.city C.bicycle D.hike
⑷____ A.living B.music C.nice D.histor
⑸____ A.carry B.gate C.page D.game
已知函数fx=-x2,x≥0x2+2x,x<0,则f(2)=____ ;不等式f(x)<3的解____
霉菌在下列哪一种环境中最容易出现 ( )