首页
登录
职称英语
It sounds like a science fiction, but researchers say it’s a scientific fact
It sounds like a science fiction, but researchers say it’s a scientific fact
游客
2025-01-23
40
管理
问题
It sounds like a science fiction, but researchers say it’s a scientific fact: Microscopic organisms dubbed "killer algae" are paralyzing fish with unknown toxins and then eating away at their flesh.
They
might be making people sick, too.
The name given to this single-cell organism, or dinoflagellate, is Pfiesteria piscimorte -
literally
, "fish killer. " It was discovered at North Carolina State University in 1988, but at the same time, few scientists believed in its existence, much less in its highly unusual predatory nature. But ongoing research has led to international acknowledgment of the phenomenon and, recently, research funding.
Seemingly
prompted
by an unknown substance secreted by fish, the aggressive creature swims into action. It sends neurotoxins into the water and air, paralyzing a fish’s nervous system, and causing it to gasp for air at the surface. Eventually the fish suffocates. The killer dinoflagellate then attaches itself to the fish and begins sucking away at its flesh. This macabre scenario may help solve several sea mysteries, such as why fishermen report seeing " fish walks" (fish trying to leave the water) and pools of dead fish with holes eaten through them.
Whether humans are affected by the dinoflagellate’s toxin remains to be seen. Researchers think it’s unlikely eating fresh fish are in danger, but anyone with frequent exposure to the creature could be in peril. Several researchers working with the algae have reported bouts of memory loss and disorientation.
To understand the killer algae further, scientists must fully characterize their toxin and determine what stimulates them to attack. They also need to know if the algae are hurting fish populations, and whether pollutants make them more likely to attack. [br] It is implied in the passage that______.
选项
A、many scientists had known dinoflagellate before 1988
B、there had been no such organisms before 1988
C、many scientists were in doubt about the nature of the organism in 1988
D、no scientists knew anything about the organism in 1988
答案
C
解析
推断题型见第二段第二句:It was discovered at North Carolina State University in 1988,but at the same time,few scientists believed in its existence,much less in its highly unusual predatory nature.(1988年在北卡罗莱纳州立大学发现了这种生物,但同时几乎没什么人相信它的存在,更没有人相信它非同寻常的食肉天性(predatory nature)了。)因此C为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3924697.html
相关试题推荐
TheUKisdesperatelyshortofscientistsandengineers,whichmeanssciencefes
Chronobiologymightsoundalittlefuturistic—likesomethingfromascience
Chronobiologymightsoundalittlefuturistic—likesomethingfromascience
Chronobiologymightsoundalittlefuturistic—likesomethingfromascience
Chronobiologymightsoundalittlefuturistic—likesomethingfromascience
Chronobiologymightsoundalittlefuturistic—likesomethingfromascience
Althoughthathappenedinthisdevelopedcountrysoundslikesciencefiction,it
Neurotechnologyhaslongbeenafavoriteofscience-fictionwriters.InNeuro
Neurotechnologyhaslongbeenafavoriteofscience-fictionwriters.InNeuro
Neurotechnologyhaslongbeenafavoriteofscience-fictionwriters.InNeuro
随机试题
A.heightB.compensateC.whereasD.imbibeE.
RenownedChinesedirectorZhangYimou’slatestfilm,RidingAloneforThous
Atthemeeting,thechairmanspoke______(high)ofourwork.highly
填入横线④处的成文日期应为()。 A.2016-02-23 B.2016.
下列()项审计技术在确定公司账面所购重大存货价值的准确表述方面最具说服力。A
()是指由测绘基准延伸,在一定范围内布设的各种测量控制网,它们是各类测绘成果的依
对于避雷针,下列说法描述正确的有()。变电站内独立避雷针统一编号且标识正确清晰$
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性: A.如
装配式建筑的评价方法主要有()。A.关于评价阶段 B.关于评价指标体系
(2018年真题)城市管道全断面修复技术主要有()。A.内衬法 B.缠绕法
最新回复
(
0
)