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
4
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、3,000m.
B、3,000km.
C、6,000m.
D、6,000km.
答案
A
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/3543496.html
相关试题推荐
[originaltext]Ifyou’recarefulenough,you’llfindthatitiscommonnowad
[originaltext]InBritainthebiggestnumberofworkingforeignerscomesfro
[originaltext]Peter:(19)ThelawontaxisisveryinterestingandIknowinLon
[originaltext]Peter:(19)ThelawontaxisisveryinterestingandIknowinLon
[originaltext]OneofNewYork’smostbeautifulandvaluablebuildingsisin
[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
TeamSpirit[A]Teamshavebecomethebasicbuildingblocks
热传导是指热量通过直接接触的物体,从温度较低部位传递到温度较高部位的过程。
以下哪一项属于兼容性测试关注的范畴()。A.办公软件在异常退出时是否会破坏正在
患者男,54岁。因右下肢挤压伤3天入院。感右大腿疼痛,肢体无力,尿少。查体:脉搏
在下列方法中,能用于项目寿命期不相同的多个互斥方案比较决策的方法有( )。A.净
初中数学“二次根式”设定的教学目标如下: ①理解并掌握二次根式的概念,掌握二次
肛瘘形成的主要原因是A.肛裂 B.内痔 C.外痔 D.直肠肛管周围脓肿
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律。 A.
下面是某求助者的MMPI-2的测验结果:? 24项版本的HAMD量
下列程序中,属于对一般费用的实质性程序的有( )。A.将已记录金额与期望值进行
最新回复
(
0
)