下列典故主要体现化学变化的是（  ）

    Injuries and deaths caused by driving after drinking are preventable. Sadly, actions by the police can only catch a small number of drunk drivers on the roads. It is up to each person to make the decisions.____So we should help guide our friends and persuade them to avoid driving after drinking. Here are some tips.Start talking to the person early. With every drink, judgment becomes increasingly uncontrolled.____So as soon as your friend starts drinking, you should try to persuade him to make a plan to get home safely. Remember, after he gets drunk, he may not listen to you.Help the person realize he is drunk. Talk to him and show him that he is increasingly clumsy.____For example, ask who you can call to pick him up, or what public transport he would like to use. If he knows he is drunk, he may follow your advice.Make last efforts. If all else fails and a drunk person wants to drive home, threaten to call the police or take his keys.____When he is not concentrated, take his keys. This may make it easier to convince him to take a cab home. Remember, don't give him the keys even if he's angry.____If you once drove home after you got drunk, your friend may not listen to you. So in order to succeed in persuading your friend to avoid driving after drinking, you should behave yourself first.

A. Ask him where his keys are.

B. Set a good role model.

C. Give him an alternative way to get home.

D. But it isn't easy to make the right decisions.

E. Make him realize drinking makes him look like a fool.

F. The police will come to help you out once you call them.

G. It means the more one drinks, the less likely that he will listen to you.

实验题。

函数$y=\frac{1}{x}$与$y=x$的图象在同一平面直角坐标系内的交点的个数是（    ）

送温暖

    小松鼠生病住院了，小动物们都前来看望她。小猴子带桃子，小蜜蜂带蜂蜜，小白兔送白菜，小牛送牛奶。百灵鸟唱起歌：“祝你快快好起来！”黄鹂也亮开嗓子：“祝你早日回到我们中间来。”小松鼠看着满屋子的伙伴，感动得流下了泪。