题干

下表呈现了2种常见的错误操作,请写出正确操作.

 序号

 (1)

 (2)

 错误操作

闻气体气味

取用固体

 正确操作

____

____

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答案(点此获取答案解析)

\u7528\u624b\u6247\u95fb\u6c14\u4f53,\u5de6\u624b\u6c34\u5e73\u62ff\u597d\u8bd5\u7ba1\uff0c\u7528\u954a\u5b50\u6216\u836f\u5319\u53d6\u836f\u54c1\uff0c\u653e\u5728\u8bd5\u7ba1\u53e3\u5904\uff0c\u518d\u6162\u6162\u5c06\u8bd5\u7ba1\u76f4\u7acb\uff0c\u4f

同类题2

阅读下面短文, 完成表格中所缺的信息,每空一词。

    Travelling is a very good activity. When you get tired of your work or study, and when you have free time, you can go to a beautiful place to enjoy the beauty(美丽) of nature(大自然) or other cities. You can take in fresh air, meet different people and make friends with them. It's good for your health to do so.

    But sometimes, travelling is not an enjoyable thing. For example, the weather can be changeable. There may be rain when you travel. You may catch a cold or be ill while travelling. The worst(最糟糕的) thing is that the thieves may steal(偷) your money. All these may happen to a traveler.

    When you go on a trip, you must get everything ready. Firstly, you must have clear information about the weather. Secondly, ask a friend to go with you so that you can help each other. Thirdly, you must be careful everywhere and try not to cause accidents(引起事故). If you do these, you will enjoy your travel.

Title (标题):____

Advantages

(优点)

You can enjoy the____views (景色) of the nature.

There will be a lot of____air around you.

It can make you ____.

Disadvantages

 (缺点)

Sometimes it ____when you travel. It will make

the road wet and slip(湿滑).

You may get ____when travelling.

The worst thing is that you may lose(丢失) some ____.

Advice

(建议)

 ____, you should know about the weather clearly. Second, you can ____someone to go with you.

Third, do everything carefully. ____ cause any accidents.

同类题3

阅读下文,回答问题

一定要幸福

李良旭

       电影《那些年,我们一起追的女孩》有一句精美的台词:“一定要幸福!” 这句话,也是人世间我们亲人最真挚的祝愿。可以峰回路转、可以迢迢渺渺、可以山高水长,但永远不能失去幸福,幸福才是人世间最宝贵的财富。

       18岁那年,天空洒满阳光。我背起一个简单的行李,就要走出家门,一个人出去闯荡了,心中弥漫着一丝兴奋和焦虑。母亲有些慌乱地从屋里出来,又塞给我二付手套,说道:“干活时,一定要戴着手套,不然会把手磨破了。”

       我心里不禁一阵酸涩。母亲为我整了整衣襟,一字一句地说道:“孩子,在外一定要幸福啊,如果感到不幸福就回家。”瞬间,眼睛里噙满了泪水……

       带着母亲“一定要幸福”的叮咛,我开始了独自外出打工。虽然经历了很多事情,也遭遇到了许多挫折和痛苦,但我似乎总能在我的生活中,找到一种幸福感,这种幸福感虽然很卑微、很渺小,甚至在常人眼里有些可笑,不足挂齿,但在我心里却像一片大海,给了我一种巨大的力量和勇气。常常看到自己拥有的那些点点滴滴的小幸福,从而使自己变得坚强、豁达起来。

       母亲打电话,开头第一句话,常常就是,“在外感到幸福吗?如果感到不幸福,那就回来吧!”这句朴实、温暖的话语,一直像清甜的甘露,在我心里荡起层层涟漪和缠绵,仿佛母亲就在我身边,我感受到了母亲那浓浓的怜爱和温暖。

       几年后,我带着一个女孩子回家。母亲见到那女孩子,脸上盛满了喜悦的笑靥。她拉起女孩子的手,只是一个劲的笑,好像不会说话似的。母亲忽然说道:“闺女,和我家娃在一起,你一定要幸福啊!”女孩子听了,脸上飞起两片红霞,羞涩地说道:“阿姨,他是很好的一个人呢,和他在一起,我感到很幸福。”母亲听了,仿佛一颗心重重地放了下来,连声说道:“那就好、那就好!”

       许多年过去了,我一直带着母亲那句“一定要幸福!”的祝福和企盼,行走的人生道路上。我知道,在母亲的心里,没有什么能比儿子生活的幸福更重要了。随着岁月的增长,我知道,幸福是建立在自己是否努力、奋斗了。在努力、奋斗中,我享受到生活赋予我的那些丝丝缕缕的幸福,感受到了人间的妖娆和婆娑。

(选自《青年博览》)