题干

水是生命之源,爱护水资源是每个公民应尽的责任.请回答下列有关问题:
(1)请举出你在生活中节约用水的一种做法:____.
(2)下列是一些净水的方法,其中可使硬水变成软水的是:____(填序号).
①过滤     ②蒸馏     ③沉淀      ④煮沸
(3)下列物质在水中能形成溶液的是____ (填序号).
①面粉     ②蔗糖     ③植物油    ④冰块
(4)按如图所示装置进行实验,一段时间后,理论上A试管中产生的气体与B试管中产生的气体的体积比为____,该实验过程中发生反应的化学方程式为____.

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洗菜水浇花,②④,②​,1:2,2H2O2H2↑+O2↑

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完形填空

    One of the easiest things in the world is to become a fault-finder. However, life can be 1when you are not busy finding fault with it.

    Several years ago I2a letter from seventeen-year-old Kerry, who described herself as a world-class fault-finder, almost always 3by things. People were always doing things that annoyed her, and 4was ever good enough. She was highly self-critical and also found fault with her friends. She became a really 5person.

    Unfortunately, it took a horrible accident to change her 6Her best friend was seriously hurt in a car crash. What made it almost 7to deal with was that the day before the 8, Kerry had visited her friend and had spent the whole time criticizing her 9 of boyfriends, the way she was living, the way she related to her mother, and various other things she felt she needed to 10It wasn't until her friend was badly hurt that Kerry became 11her habit of finding fault. Very quickly, she learned to appreciate life rather than to 12 everything so harshly ( 刻薄) . She was able to transfer her new wisdom to other parts of her13as well.

    Perhaps most of us aren't as extreme at fault-finding,14 when we're honest, we can be sharply 15of  the world. I'm not suggesting you16problems, or that you pretend things are17than they are, but simply that you learn to allow things to be as they are—18most of the time, and especially when it's not a really big 19 .

    Train yourself to "bite your tongue" , and with a little 20, you'll get really good at letting things go. And when you do, you'll get back your enthusiasm and love for life.