题型:判断题 对于定义在R上的函数f(x),给出三个命题:①若f(-2)=f(2),则f(x)为偶函数;②若f(-2)≠f(2),则f(x)不是偶函数;③若f(-2)=f(2),则f(x)一定不是奇函数.其中正确命题的序号为______. 查看答案
题型:判断题 The fog was so heavy this morning that drivers could hardly ______ thethings just ten meters away from them.A.figure outB.look outC.make outD.rule out 查看答案