题干

函数y=3|log3x|的图象是(  )

A:

B:

C:

D:

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答案(点此获取答案解析)

A

同类题2

配对阅读。请为每个人选择最适合阅读的书,并将答案的字母编号填写在括号内。

____ Kate wants to keep thinner and healthier.
____ Tom is collecting information about how to prevent electrical fire.
____ Betty is trying to advise her mother to do some sports.
____ Sophia has to know some ways to prevent common cold.
____ Jane is studying health insurance(保险).
A.This book will help you understand how to stay well and avoid disease. You’ll learn some things that you might use at home to be away from cold.
B.Do you want to know how much food you should eat every day? Do you want to make a good plan about your meals? If so, please read this book. From the book, you will know about safe ways to lose weight and how many calories you need each day.
C.Do you have difficulties to communicate with others? Do you often say something wrong when you talk to others? This book will teach you how to say proper things to different people in different places.
D.This book will tell you something about how to keep healthy by taking exercise, but also the ways of taking exercise.
E. Are you worried parents? Do you have trouble in teaching your children? This book is written by a famous psychologist. It can help you understand your children well and make friends with them.
F. You will know why people need health insurance by reading this book. You can also know how to choose health insurance and how to use insurance to pay for your health in this book.
G. You will get useful information about how to prevent common accidents from this book. It’s about safety both indoors and outdoors.

同类题5

阅读下面的文字,完成下列小题。

古人出行带什么样的“包”

    ①在中国古代,衣服大多没有口袋,古人出行时“包”更是不可或缺。“包”最早并不叫“包”,而是叫“佩囊”。佩囊是古代使用最早、流行时间最久的包,像钥匙、印章、凭证、手巾一类必须随身带的东西,大都放在这种囊内。因为外出时多将其佩戴于腰间,故谓之“佩囊”。从文献记载来看,先秦时人们已有带包的习惯,即所谓“佩囊之俗”。古人的“佩囊之俗”据推测起源于士兵配备的箭囊。佩囊实用方便,从先秦用到了明清,虽然名称和款式多有变化,但人们都少不了佩囊。古代的包也有大小之别,汉代学者毛亨称“小曰橐,大曰囊”;制作材料也不一样,有皮包和布包之分。

    ②汉朝时,佩囊被称为“縢囊”。縢囊是一种小包。汉代也出现了一种叫“绶囊”的方形包,皇帝常常用之赏赐臣僚,有绶囊的人自然是有官爵之人,所以,“包”成了身份象征。绶囊主要用于盛放印信一类的东西。因为“包”已与身份联系了起来,所以在图案、色彩上都有规定和讲究。绶囊最常用的图案是兽头,故称“兽头辇囊”。兽头中又以虎头使用为多,因此又有“虎头擎囊”之称。与绶囊同样能显示身份的包还有“笏囊”,也称“笏袋”。“笏”即笏板,是官场用的简易手写板。盛放笏板的包便是笏囊。与绶囊多用青色不同,高级笏囊多用紫色,古人称之为“紫荷”。 紫荷也是唐朝官场上的高级包。

    ③唐代时,最能显示身份的包是“鱼袋”。绶囊是装印信的,而鱼袋则是盛放符契这类“身份证”的。唐朝时,官员的身份证明制成鲤鱼形,故名“鱼符”。凡五品以上官吏穿章服时必须佩戴鱼符;中央和地方互动,也以鱼符为凭信。凡有鱼符者俱给鱼袋,使用时系佩于腰间,内盛鱼符。鱼符有金、银、铜等质地,以区别地位;鱼袋也通过金、银装饰来分辨高低。宋朝使用的“鱼袋”也有金鱼袋、银鱼袋之分,但仅是一个空包,鱼符被废用了,仅在这种包上绣上鱼纹,凡有资格穿紫红、绯红官服的高官均可用这种包。

    ④除笏囊、鱼袋外,古代官场、文人间还有一种包很流行,这就是用来盛放计算工具、文具一类的“算袋”。 其实,“算袋”这种包很早就有,但汉代称“书囊”,也称“书袋”;宋朝称“算袋”为“昭文袋”,也称“照袋”、“招文袋”,民间则称其为“刀笔囊”,一直到明清都在使用。金代也使用算袋,但称为“书袋”。元明清时代,随着新物件的出现和使用,包的款式和功能也越来越丰富。如放钱放物的多用包“褡裢”、放烟丝的“烟袋”、盛放扇子的“扇囊”、盛放挂表的“表帕”、装饰价值更高的“荷包”等。其中“褡裢”为双层袋子,中间开口,两头放钱,使用时从中间对折,搭于臂膊上,故又称“搭膊”。因为搭膊多用来装钱,民间干脆呼之为“钱袋子”。因为“袋”与“代”谐音,常用之赠人,以讨“代代有钱”的口彩。

(摘编自《安阳晚报》2016年2月24日)