问题 选择题

国家立法规定从2011年5月1日起开始公共场所全面禁烟.下列叙述不正确的是(  )

A.吸烟对自己有害,对周围人无害

B.尼古丁、焦油能诱发呼吸系统疾病

C.烟雾中有许多对人体有害的物质

D.吸烟抑制呼吸道内表面的纤毛运动

答案

香烟中含有1400多种成分.吸烟时产生烟雾里有40多种致癌物质,还有十多种会促进癌发展的物质,其中对人体危害最大的是尼古丁、一氧化碳焦油和多种其它金属化合物,抑制呼吸道内表面的纤毛运动,一支烟所含的尼古丁就足以杀死一只小白鼠.香烟烟雾中大量的一氧化碳同血红蛋白的结合能力比氧大240-300倍,严重地削弱了红细胞的携氧能力,因此,吸烟使血液凝结加快,容易引起心肌梗塞、中风、心肌缺氧等心血管疾病.更为严重的是,吸烟者还严重妨碍他人健康.研究结果表明,吸烟者吸烟时对旁人的危害比对他自己还大.有关医学研究表明,吸烟是心脑血管疾病、癌症、慢性阻塞性肺病等多种疾患的行为危害因素,吸烟已成为继高血压之后的第二号全球杀手.据统计,长期吸烟者的肺癌发病率比不吸烟者高10倍至20倍,喉癌发病率高6至10倍,冠心病发病率高2至3倍,循环系统发病率高3倍,气管类发病率高2至8倍.可见A符合题意.

故选:A

阅读理解

Froli Cat Dart

While cats require less attention compared to dogs, that doesn’t mean you can just leave them at home all day long. No sir, they too, need some level of attention and will have to keep themselves occupied mentally and physically too. Well, FroliCat Dart makes it possible. Just what is the FroliCat Dart all about? Well, for starters, this device delivers 360° rotation (旋转) that will project laser patterns on the floor, letting your feline (猫科动物) friend chase after it.
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小题1:How does FroliCat Dart work?
A.It can make cats run around your house.
B.It can project laser patterns to make cats chase.
C.It can make cats much sleepier than before.
D.It can provide food and drink for cats.
小题2:From the second paragraph, we know that________
A.Lack of power happens to some of us less often than before.
B.The adapter tips cater for all kinds of cell phone brands.
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小题3:Where do the Battery Powered Gloves sell well?
A. Iceland        B. India       C. Australia      D Singapore
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