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、3,000m. B、3,000km. C、6,000m. D、6,000km. A女士问钻井机实际挖到了多深,男士回答说大概3000米。后面他又补充道,他们在3000米这个位置还发现了生物体,后面提到这些生物体其实就是前面所说的远在地表下的细菌,所以本
A、3,000m. B、3,000km. C、6,000m. D、6,000km. A女士问钻井机实际挖到了多深,男士回答说大概3000米。后面他又补充道,他们在3000米这个位置还发现了生物体,后面提到这些生物体其实就是前面所说的远在地表下的细菌,所以本
admin
2023-01-29
79
问题
W: Today’s guest on "Science Update" is David Brown. Dr. Brown, you and your team have found bacteria far below the Earth’s surface. You must be thrilled about your discovery.
M: Well, yes, it’s very exciting. For a long time we’d suspected the presence of such organisms, but we lacked substantial evidence.
W: How did you confirm the existence of the bacteria?
M: Well. technology helped. Our drilling techniques have improved significantly, and so the risk that surface bacteria could be mistaken for those found at much greater depth was reduced. With the new techniques, we could get much deeper into the Earth.
W: How far down did you actually get?
M: In one case, about three kilometers. We were surprised, I must tell you, that there were organisms that far down.
W: You know, it sounds like fiction, something like a lost world.
M: Let’s call it a hidden biosphere, and it’s probably a very extensive one. The mass of the living organisms below the surface may be equal in size to the mass of the surface bacteria.
W: Have you found any unique life-forms?
M: Yes. We’ve found a very special organism. Let’s call it Type-A bacterium. It can live and grow only where there is no oxygen.
W: Is there any danger of these bacteria infecting people when you bring them to the surface?
M: These bacteria were adapted to an environment that’s completely different from humans’. That’s to say, they could not survive in our environment. So we really don’t need to worry about these bacteria causing illness in people.
1. What have Dr. Brown and his team discovered?
2. What helps to confirm the existence of bacteria below the Earth’s surface?
3. How deep down did the man find the bacteria?
4. Why does the man say there is no danger of infection by the bacteria brought to surface?
选项
A、3,000m.
B、3,000km.
C、6,000m.
D、6,000km.
答案
A
解析
女士问钻井机实际挖到了多深,男士回答说大概3000米。后面他又补充道,他们在3000米这个位置还发现了生物体,后面提到这些生物体其实就是前面所说的远在地表下的细菌,所以本题选A。
转载请注明原文地址:https://kaotiyun.com/show/kWvD777K
0
大学英语六级
相关试题推荐
Duetohistoricalreasons,peopleintheCzechRepubliclacked________.
InFrance,allschoolsfollowthesamebasiccurriculum.
Onedayagroupofpeoplewalkedintoacaveandpaintedhandprintsalloverthewalls.Tenthousandyearslater,archaeologists
Artwasherfavoritesubjectatschool,butshedidadegreeingeography.
America—thegreat"meltingpot"—hasalwaysbeenarichblendofculturaltraditionsfromallovertheworld.ManyAmericanfamil
America—thegreat"meltingpot"—hasalwaysbeenarichblendofculturaltraditionsfromallovertheworld.ManyAmericanfamil
America—thegreat"meltingpot"—hasalwaysbeenarichblendofculturaltraditionsfromallovertheworld.ManyAmericanfamil
Areyoufacingasituationthatlooksimpossibletofix?In1969,thepollutionwasterriblealongtheCuyahogaRivernearC
姚明今天已是一名优秀的球星,可当初他的追求目标却不是拿冠军、去NBA、当球星。他那玩命的训练,奋勇的拼搏,只是为了有一双合脚的鞋子,让全家人不再为他穿鞋而发愁。也许姚明如此简单的目标让人感到不可思议,但正是这看似简单的目标成就了他今天的辉煌。他认真实际地确
在这本书里,我想写现代中国某一部分社会、某一类人物。写这类人,我没忘记他们是人类,只是人类,具有无毛两足动物的基本根性。角色当然是虚构的,但是有考据癖的人也当然不肯错过索隐的机会、放弃附会的权利的。这本书整整写了两年,两年里忧世伤生,屡想中止,由于杨绛女士
随机试题
血流对心脏位置的叙述哪一项是错误的()
男,50岁。丨6残冠拔除。拔牙顺利,术后发现口腔与上颌窦交通。原因是
十九畏中人参畏十九畏中郁金畏
协助诊断急性脑血管病首选的检查项目为
某企业2008年填报《企业所得税年度纳税申报表(A类)》时,第11行“营业外收入”应当包括下列( )项目。
各商业银行可根据业务发展需要和风险管控能力,自主确定开办出国留学贷款。()
1,2/3,1,8/7,()
下列关系运算中,()不要求关系R与关系S具有相同的目(属性个数)。
下面关于过程调用的陈述中,哪个是正确的
Bullying(欺凌弱小者)atSchool:TacklingtheProblemA.Abroaddefinitionofbullyingiswhenastudentisrepeatedlyexposedto
最新回复
(
0
)