题干

医药工业利用发酵技术生产出医药用品,比如(   )

①抗生素         ②乳酸       ③维生素         ④香料

A:①②

B:②③

C:①③

D:②④

上一题 下一题 0.0难度 选择题 更新时间:2014-05-07 05:40:04

答案(点此获取答案解析)

C

同类题1

阅读理解

    Mick Polly,an owner of a toy store,lives with his teenage daughter Carolina in Kentucky.He is known as the Bike Man.Over the past five years,Mick has built hundreds of bikes for needy kids.

    One day in 2012,a 13﹣year﹣old boy with a broken bike walked by Mick's house."I was working in my garage(车库),and he asked if I could fix it,"says Mick,now 53.

    The boy's bike had a broken wheel.Mick sent a post(帖子) on Facebook,asking his friends if they had the needed part.One friend saw the post and gave away two used bikes.Mick took parts from each to build a new set of wheels for the boy.

    Soon after,Mick repaired a bike for the boy's brother and fixed one for his sister.Word spread,and during the year,he had fixed up lots of bikes for local kids whose parents were not able to afford new ones

    "People are throwing away bikes day and night,"says Mick.

    Mick puts the bikes and bike parts in his garage."I take off the good tires or the handlebars or the seats and use them,"he says.

    Up to now,the bike man has repaired hundreds of bikes and given away nearly 700newly repaired bikes.They're free,but the kids must agree to two things:They have to learn how to put waste things to good use and they have to try their best to study in school.

    If a kid's grades are low,Mick requires a teacher's note"saying that you're doing your best,"Mick says.Mick also hopes the bikes will get kids off the sofa."When I was growing up,we all rode our bikes,"he says."Hopefully these kids can get some exercise."

同类题3

阅读材料,回答下列问题:

材料一

所有的平民都负了富人的债,他们或者是替富人耕种土地,把收成的六分之五作为地租缴纳给债主,自己只能留六分之一,因而被称为“六一汉”或“塞特”;或者以自己人身作债务抵押,可以被债主押收,因而有的在本土成为奴隶,有的被卖到了外国。

材料二

我给了一般人民以恰好足够的权力,也不使他们失掉尊严,也不给他们太多;而那些有钱有势的豪富的人们,我也设法不使他们受到损害;我手执一只大盾,不让任何一方不公平的占着优势。

――梭伦

材料三

梭伦制定的四大财产等级及其权益分配

500斗级

拥有年产500斗(一斗相当于38千克)农产品的地产(这个产量足够提供15个家庭一年所需的基本口粮)的公民,享有选举、充任包括执政官在内的各级国家职官的资格

骑士级

有能力提供马匹和武器装备,并担任骑兵的公民。跻身该等级年收入必须达300~~500斗。享有除司库以外的各级职官的选举和任职资格

双牛级

拥有两头耕牛,其财力可达到自备盔甲、担任重武器装备步兵的公民,大约需要年收入200~~300斗农产品。享有除担任执政官以外的各级职官的选举和任职资格

雇工级

泛指受雇于他人的公民。他们年收入不到200斗,不能担任任何公职,但可参加公民大会和作为陪审员参与司法活动。

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