题干

x
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3
x
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1
在实数范围内有意义,则x的取值范围是(  )

A:x≥3

B:x≤3且x≠1

C:1<x≤3

D:x≥1且x≠3

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答案(点此获取答案解析)

A

同类题2

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。

        If you find that your teacher is unfair to you, think about what is happening. Try to find out whether your teacher really dislikes you, or whether something else is going on. Here are some questions to ask yourself:

        ____Ask your classmates if they are having trouble with the teacher, too. If they say yes, perhaps your teacher is to blame.

        Are you working up to your ability? Maybe you got a C in your last test, and your teacher told you that you could do better. And the kid sitting beside you got a C, too.____Isn't this unfair? Well, it could be that your teacher knows that you could do better if you put more effort into it.____

        ____There's nothing wrong with being sensitive(敏感的),but if you react to criticism quite differently from others, this could be a reason why you think your teacher doesn't like you.

        Does your teacher seem to act unfairly all the time, or just once in a while? Think about the harsh(苛刻的) things your teacher has done to you. Are these things happening every day, or just once or twice a month? If your teacher really hates you, you would probably be picked on all the time.____

A  Are you the only person being treated badly, or is your teacher rough on the whole class?

B  Are you getting along well with your classmates? 

C  Are you more sensitive than other students?

D  Are you interested in your lessons?

E  If your teacher has acted unfairly only a few times, then there's probably something else going on.

F  Teachers often grade students by different standards.

G  But the teacher didn't say anything to him!

同类题3

阅读下文,完成习题

竹叶青酒

    ①竹叶青酒和名盛千年的汾酒,同产于汾阳杏花村汾酒石,在第二、第三届全国评酒会上,均被评为全国十八大名酒之一。该酒色泽金黄透明而微带青碧,有汾酒和药材浸泡形成的独特香气,芳香醉厚,入口甜绵微苦,温和,无刺激感,余味无穷。

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    ④解放以后,杏花村汾酒厂的广大职工进一步发挥了聪明才智,从精选药材,浸泡兑制,到勾兑陈酿等工序都建立了完美的竹叶青酒生产工艺,使竹叶青酒具有酒体完整,谐调匀称,虽有多种药材香气,但其中的任一种香气成份均不吐露的特色,在全国配制酒类中独树一帜,深受国内外消费者的欢迎。年平均出口量近千吨,远销五大洲,在海外一些国家被誉为“仙酒”。1975年,我国著名数学家华罗庚到杏花村汾酒厂推广优选法,对浸泡工艺等进行了反复试验和优选,改进了操作规程,使竹叶青酒的优质率由百分之三十二提高到百分之五十二。随着社会和生产的发展,竹叶青酒将会有更加美好的前景。