首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、In caves. B、Inside archaean. C、On the ocean floor. D、Far below the Earth’s crust. CAccording to the woman,where are the hydrot
A、In caves. B、Inside archaean. C、On the ocean floor. D、Far below the Earth’s crust. CAccording to the woman,where are the hydrot
admin
2009-04-23
71
问题
M: So, what is your biology project about?
W: It is about microorganisms that live by chemosynthesis.
M: Err...what’s chemosynthesis?
W: Well, it’s pretty complicated. You know how most life on Earth depends either directly or indirectly on sunlight?
M: You mean like plants get energy directly from sunlight, and animals eat plants, so they depend indirectly on sunlight?
W: Right. But down on the ocean floor, there is no sunlight. In some places though, there are hydrothermal vents, which are small cracks on the ocean floor. And these vents release heat and minerals from the inside of the Earth into the seawater. And all along the vents there are these unusual microorganisms. They are called archaean. And these archaean use chemical reactions to get their energy from the minerals. The minerals that are released by the vents. So their energy comes from chemical reactions, not sunlight.
M: So chemosynthesis is getting their energy from chemicals?
W: That’s right.
M: That makes archaean very different from other forms of life.
W: And their genetic makeup is very different, too. They are one sort of organisms just like bacteria are, but genetically they are as different from bacteria as we humans are.
M: Wah, that’s a really interesting project.
选项
A、In caves.
B、Inside archaean.
C、On the ocean floor.
D、Far below the Earth’s crust.
答案
C
解析
According to the woman,where are the hydrothermal vents found?
转载请注明原文地址:https://kaotiyun.com/show/fUC7777K
0
大学英语四级
相关试题推荐
ExerciseIsGoodforYourBodyandYourMindA)Thebenefitsofexercisearewidelyknown:ithelpsyoulivelongerandlowe
Children’sHealthcareofAtlantawantstomoveGeorgiaoutofthetop10listforchildhoodobesity(肥胖),officialssaid.
Children’sHealthcareofAtlantawantstomoveGeorgiaoutofthetop10listforchildhoodobesity(肥胖),officialssaid.
A、Afitnessprogramofferedtothegeneralpublic.B、Aphysicalexercisetobuildupmuscles.C、Aprogramthatmakespeoplekeep
Forthispart,youareallowed30minutestowriteashortessayentitledOfferingYourSeat-Youshouldstartwithabriefdesc
A、Allthetransportationisfree.B、Everyonecangetmedicaltreatmentandjobtraining.C、Freehealthcareandsocialservices
A、Theymayknownothingabouttheworld.B、Theymayhavelittleholidayspirit.C、Theymaybeextremelyinterestedintravelling
Cursive(手写体,草书),theartofpenmanshipcastasideinrecentyearsasschoolsincreasinglyfocusonkeyboarding,maybegetting
A、Toinquireabouttheinterestratesatthewoman’sbank.B、Toinquireaboutthecurrentfinancialmarketsituation.C、Toseei
Accordingtothefirstparagraph,oneoftheconcernsrelatedtointernationalbiomedicalresearchis______.Howdoestheauth
随机试题
因承包人原因造成停工的,由承包人承担发生的费用,工期( )。
下列关于双眼视野的叙述,哪项不正确
初产妇,孕36周。昨晚突然阴道流血,出血量约400ml,无腹痛。检查:血压80/60mmHg,宫底高度与孕月相符,腹软无压痛,胎位清楚,胎心率110次/分。患者诊断可能性最大是
空腹血糖测定的取血时间
划拨土地使用权的租赁时间超过1年的,应办理租赁合同,合同期限不得超过出让年限。()
计算机网络是一个复合系统,共同遵守的规则称为网络协议。网络协议主要由()。
若则幂级数()。
我国从()开始终止建都域的夜禁和里坊制度。
将二进制序列00I1011表示为八进制形式,为________。
有如下程序#includeusingnamespacestd;inti=1:classFun{public:staticinti;intvalue(){returni—l
最新回复
(
0
)