首页
登录
职称英语
[originaltext]W: Today’s guest on "Science Update" is David Brown. Dr. Brown, y
[originaltext]W: Today’s guest on "Science Update" is David Brown. Dr. Brown, y
游客
2023-09-07
25
管理
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.
选项
A、Modern experiments.
B、Advanced technology.
C、Precise statistics.
D、Keen observation.
答案
B
解析
对话中,布朗博士提到,是科技帮了忙。尤其是钻孔技术突飞猛进,因此选B。
转载请注明原文地址:https://tihaiku.com/zcyy/2993830.html
相关试题推荐
Forme,scientificknowledgeisdividedintomathematicalsciences,natural
Forme,scientificknowledgeisdividedintomathematicalsciences,natural
Forme,scientificknowledgeisdividedintomathematicalsciences,natural
[originaltext]Aperson’ssocialprestigeseemstobedeterminedmainlybyh
[originaltext]Aperson’ssocialprestigeseemstobedeterminedmainlybyh
[originaltext]EachdayeverypersonintheUntiedStatesthrowsawaymoret
[originaltext]W:SowhatarethetwomaintimesofthedaythatyouwatchTV?
[originaltext]W:SowhatarethetwomaintimesofthedaythatyouwatchTV?
[originaltext]W:Ithinkthereshouldbegreaterrestrictionsplacedonthepre
[originaltext]M:Hello.ThisisTomDavis.IhaveanappointmentwithMrs.Jone
随机试题
[originaltext]M:Iwaslateeighttimeslastyear.W:Iwaslatetwicethatoft
智能手机日益渗入人们的生活。许多年轻人似乎一刻也离不开它。在大街上,经常可以看到一些年轻人不停地用智能手机拍照,添加一段说明,然后放到微博(microb
[originaltext]InJune,mybandperformedatapartyataLowerEastSidebo
高血压是一种常见病,早期仅表现心脏排血量和全身小动脉张力增加,持续发展的结果可导
某房地产经纪公司接受二手住宅楼销售委托,由经纪人张某到现场进行勘察得知:该住宅楼
Tocompileanexhaustivedictionaryisa
意识全部丧失,所有反射均消失的状态称为()A.嗜睡 B.昏睡 C.
根据现行国家标准《消防给水及消火栓系统技术规范》(GB50974),室内消火栓
1,11,121,1331,()A.14141; B.14641; C.1
(2019年真题)下列关于申请商用房贷款时借款人须具备的条件表述中,错误的是(
最新回复
(
0
)