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
2024-04-12
57
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.
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://tihaiku.com/zcyy/3552478.html
相关试题推荐
[originaltext]TheworldwideorganizationoftheRedCrossstemsfromtheid
[originaltext]TheworldwideorganizationoftheRedCrossstemsfromtheid
[originaltext]TheworldwideorganizationoftheRedCrossstemsfromtheid
[originaltext]Howmanyteethhaveyouhadfilledinthepasttwoyears?If
[originaltext]TheGoldenGateBridgejoinsthebeautifulcityofSanFranci
[originaltext]W:WelcometothiseditionofTalkoftheNation.We’retalkingt
[originaltext]W:WelcometothiseditionofTalkoftheNation.We’retalkingt
[originaltext]W:WelcometothiseditionofTalkoftheNation.We’retalkingt
[originaltext]W:Sitdown,please,Mr.Black.Ihopeyouenjoyedyourjourney.
[originaltext]M:Whatdoyouthinkofthegovernment’snewtaxcutproposal?W:
随机试题
CompareQuantityAandQuantityB,usingadditionalinformationcenteredabovet
ChooseTWOletters,A-E.WhatTWOthingsdidrespondentssaytheylikedmostabo
Americanshavefourprimaryavenuesformakingfriends:atwork,atschool,
Inthehistoryofartspatronage(赞助),entrepreneurs-turned-connoisseurs(艺术
Haveyoueverwantedtotravelbackthroughtimeandseewhatlifewaslike
关于沥青密度、加热老化、布氏旋转黏度试验,请回答以下问题。(1)非经注明,测定坜
在下列各项中,属于工程项目建设投资的有()。A、建设期利息 B、设备及工(器)
在一个制造过程中,其产品的不合格品率为0.03,随机抽取9件产品,其中恰有1件不
两侧下颌突未联合会导致A.面横裂 B.面斜裂 C.单侧唇裂 D.下唇正中裂
下列财政支出中,属于一般利益支出的是()。A.教育支出 B.卫生支出
最新回复
(
0
)