题干

我们之所以要孝敬父母,是因为孝敬父母(    )

①是做人的本分                  ②是中华民族的传统美德

③是父母对子女的要求      ④是法律规定子女应尽的义务

A:①②④

B:②③④

C:①③④

D:①②③

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A

同类题1

阅读课文 《神奇的克隆》,回答问题。
    《西游记》里的孙大圣,紧急关头常常把下一把毫毛,再吹一口气,毫毛立刻变成了一群和自己一模一样的孙悟空。这当然是神话, 不过用今天的科学名词来讲,那就是孙悟空能够快速地克隆自己。   我们知道,高等动物一般要通过雄性和雌性生殖细胞的结合,才能繁衍后代,人们把这种繁殖叫做有性繁殖。换句话说,每只动物都有自 己的爸爸妈妈。如果不经过两性细胞结合而直接繁衍后代,就叫无性繁殖,也称克隆。   许多植物都有先天克隆的本领。例如,从一棵大树上剪下几根枝条插进土里,枝条就会长成一株株活泼可爱的小柳树;把马铃薯切成许多 小块种进地里,就能收获许多新鲜的马铃薯;把仙人掌切成几块,每块落地不久就会生根,长成新的仙人掌,此外,一些植物还可以通过 ​压条或嫁接培育后代。凡此种种,都是植物的克隆。   一些单细胞微生物,如细菌,经过20分钟左右的时间,就可以一分为二,再分为四个、八个,这就是低等生物的克隆。   那么,高等生物可不可以克隆呢?从20世纪开始,科学家在这方面进行了卓有成效的研究。1996年,英国科学家成功地克隆出了世界上的 一只克隆羊。这是一项了不起的成就,轰动了当时的科学界。科学家借用一名乡村歌手的名字,给这只克隆羊起名为“多利”。   克隆技术是一项可以造福于人类的科技成果。   人们将克隆技术与其他科技成果结合,可以根据需要培育出优质、高产的粮食、蔬菜新品种;也可以培育大量品质优良的家畜,大大提高 了饲养效率。   克隆技术还可以挽救一些濒危物种,让一些濒临灭绝的动物免遭厄运,从而调节大自然的生态平衡。人们利用克隆技术能够培植人体的皮 ​肤进行植皮手术;能够“制造”出人的耳朵、软骨、肝脏和心脏等人体“配件”,一旦病人需要,就能重新“装配”。   神奇的克隆技术正向人类展示它诱人的前景。

同类题3

任务型阅读

    When it comes to the benefit of volunteering, a lot of people think it's all about the warm feeling after helping someone. ____As is known, charity work requires a wide variety of people to do a wide variety of things for everything to work. It means that there are some surprising benefits for volunteers. For example, volunteering:

    Teaches you new skills.

    From helping making websites to teaching immigrant kids your native language, or to arranging events for charity, volunteering can really be almost anything. It means that when you get involved charity work, a lot of the time you will face challenges. ____

    Can teach you what truly matters.

    It's a great way to find new perspectives(角度)on life. When you've been at it for a while, you just might find yourself re-evaluating your advantages.____ One of my friends went from wanting U be a lawyer to discovering a true passion for teaching

    ____

    Maybe it is not surprising, but what might surprise you is how genuine these friends are. Some oi my long-term friends are people I've met through volunteering. I'm not that kind of guy that makes friends purely for connections, but sometimes it's very convenient to have a broad network.

    Summed up in one line: volunteering helps you grow. ____ You meet a wide variety of people who don't have a lot in common with. You learn to get along with people involved in many different walks in life. You learn to know what you are to do. So if you've ever considered volunteering, what are you waiting for?

A. You might even decide on a completely new path to take in life.

B. Helps you make new friends

C. As it turns out, that's far from the only benefit.

D. Volunteering helps you look outside yourself and your problems.

E. Through overcoming the challenges, you learn completely new skills.

F. Not only as a person, but it helps you develop your skill as well.

G. Can help improve social skills