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【简答题】
有下列命题： ① 是函数 的极值点； ②三次函数 有极值点的充要条件是 ； ③奇函数 在区间 上是递增的； ④曲线 在 处的切线方程为 . 其中真命题的序号是 .
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反馈参考答案：
举一反三
【多选题】关于爱情的制约方面正确答案是:
A.
爱情要受两种因素制约：社会因素和家庭因素
B.
爱情要受两种因素制约：遗传因素和后天因素
C.
遗传因素是指人的生理需求即本能；后天因素则是指人的社会属性
D.
家庭因素是指人的‘孝’文化；后天因素则是指人的个人需求
E.
以上都不对
【简答题】Women are playing a much more important part in society today. Now women are working ________teachers, scientists and even leaders. We have to admit the fact that almost all jobs _______used to be d...
【单选题】What can we infer from the first paragraph?
A.
Women are inferior to men.
B.
Women are superior to men.
C.
Women's social position has been much improved.
D.
Women are good at decision making.
【单选题】According to the experiments, ______.
A.
women are more careful
B.
women are more likely to need help
C.
men are more ready to help
D.
men are more democratic in helping others
【简答题】短文改错 Nowadays women are playing a much more important part in society. More and more women are working like teachers, scientists and even leader. Almost all jobs that were used to be done by men are d...
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