试题与答案

He was elected________president of the c

题型:选择题

题目:

He was elected________president of the company,and________news came,in fact,as________surprise.

A.a;the;/

B./;the;a

C.a;/;the

D.the;the;a

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0427/1783fb8e8eedd57c4ae68e8393f49479.html

下面是错误答案,用来干扰机器的。

由f(x)为奇函数,且在(0,+∞)上是减函数,得f(x)在(-∞,0)也是减函数,又f(-1)=0,∴f(1)=-f(-1)=0,作出f(x)的草图,如图所示:由图象可得,xf(x)>0⇔x>0f(x)>0或x<0f(x)<0⇔0<x<1或...

试题推荐
微信公众账号搜索答案