问题
选择题
函数f（x）=
|
答案
∵0≤x≤2且x∈N+，
∴x=1，2．
又当x=1时，f（1）=
，2 3
当x=2时，f（2）=
，3 4
故选B．
搜题请搜索小程序“爱下问搜题”
函数f（x）=
|
∵0≤x≤2且x∈N+，
∴x=1，2．
又当x=1时，f（1）=
，2 3
当x=2时，f（2）=
，3 4
故选B．
选用所给的词组填空，每小题只能填一个词组，每个词组只能用一次。
小题1: Everyone in our class is busy the coming exam. 小题2:1 must leave home , or I'll be late for work. 小题3: I've the Great Wall a lot, but I've never been there. 小题4:It's a pity that he won't come to your birthday party next Saturday. 小题5: The little girl looked at the unusually tall man . |