下列关于俄罗斯的叙述正确的是（  ）

如果对定义在R上的函数f（x），对任意x₁≠x₂，都有x₁f（x₁）+x₂f（x₂）＞x₁f（x₂）+x₂f（x₁）则称函数f（x）为“H函数”．给出下列函数：

①y=﹣x³+x+1；

②y=3x﹣2（sinx﹣cosx）；

③y=e^x+1；

④f（x）=$\left\{\begin{array}{c}\ln \left|x\right|,x\ne 0\\ 0,x=0\end{array}\right.$．

其中函数式“H函数”的个数是（　　）

鲁迅说：“至于中国所谓的手段，在我看来，有时也应该说有的，但绝非‘以夷制夷’，倒是想‘以夷制华’。然而，夷又哪有这么愚笨呢，却先来一套‘以华制华’给你看。”其中最能体现列强‘以华制华’策略的条约应该是

小立同学的文具盒中有这样一张字条：“当别人误解你时，请学会宽容”。当与别人发生矛盾而情绪冲动时，他总要提醒自己宽容别人。小立同学调控情绪的方法属于（    ）

先通读下面的短文，掌握其大意，然后在每小题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
    Some young people are worrying about acnes(青春痘) on their faces, and some are worrying about their figures(身材). Do you know 1 on earth（到底，究竟） the secret of beauty is? Think of smile and health, and then you may find the 2 .
    Maybe you are not 3 with your big nose, your small 4 or your weight(体重). Don't waste energy and feelings on the way you look . In fact, when you become an 5 and look at pictures of your past time, you'll find how cute you are.
    6 is the best way to make you beautiful. When people are happy, they look nice. When people smile or laugh from the7 of their hearts(心脏), they look very beautiful.
    Don't worry about your weight too much. Don't 8 food for it. No one lives 9 health. So you need to eat healthy food and do enough exercise.
    When you accept（接受） what you have 10 and enjoy them, you will really become pretty “inside and out”.