首页
登录
职称英语
[originaltext]W: Today’s guest on "Science Update" is David Brown. [1]Dr. Brown
[originaltext]W: Today’s guest on "Science Update" is David Brown. [1]Dr. Brown
游客
2024-04-06
5
管理
问题
W: Today’s guest on "Science Update" is David Brown. [1]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: [2]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: [3]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’. [4]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、Modem experiments.
B、Advanced technology.
C、Precise statistics.
D、Keen observation.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3543495.html
相关试题推荐
[originaltext]Ifyou’recarefulenough,you’llfindthatitiscommonnowad
[originaltext]Ifyou’recarefulenough,you’llfindthatitiscommonnowad
[originaltext]InBritainthebiggestnumberofworkingforeignerscomesfro
[originaltext]Peter:(19)ThelawontaxisisveryinterestingandIknowinLon
[originaltext]Peter:(19)ThelawontaxisisveryinterestingandIknowinLon
[originaltext]OneofNewYork’smostbeautifulandvaluablebuildingsisin
[originaltext]OneofNewYork’smostbeautifulandvaluablebuildingsisin
[originaltext]Ababyspendsthefirstyearoflifelearningtolisten.(9)A
[originaltext]W:Hi,Scott,haveyouheardaboutDianarecently?M:No,Ihave
[originaltext]W:Hi,Scott,haveyouheardaboutDianarecently?M:No,Ihave
随机试题
Chemistryisthestudyofthebehaviorandcompositionofmatter.Allfoods
[originaltext]M:Hi,Sherrill.W:Hello,Fill,howareyou?M:I’mfine,where
A公司于2017年12月3日购入一项管理用固定资产。该项固定资产的入账价值为84
自20世纪90年代以来,随着我国股市在熊市与牛市之间的周期性震荡,我国券商行业的
体育教育的三个基本要素是()A.体育教师、学生、教学方法 B.教学物质条件
阿米替林的主要适应证为A.躁狂症 B.抑郁症 C.焦虑症 D.神经官能症
给予中暑高热病人降温时,应将环境温度控制在A.5~10℃ B.10~15℃
在下列选项中肯定人与天地万物的联系和宇宙整体性观点的有( ) A.天地与我并
个人外汇账户及外汇现钞管理中,应经国家外汇管理局核准的有()。A.开立外国投资
(2021年第2批真题)工程质量监督机构对违反有关规定,造=成工程质量事故和严重
最新回复
(
0
)