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
2023-12-27
24
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] Which of the following statements is true?
选项
A、Scientists have solved the mystery about the fish killer.
B、More studies need to be made about the fish killer.
C、It is proved that the algae are reducing fish populations.
D、Humans have already been affected by the toxin.
答案
B
解析
推断题型见第五段: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.见下划线部分,因此可知还有更多的研究要做,因此B为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3310143.html
相关试题推荐
Theresearchershopethattheirhealthcareprogramwillbepopularized.A、正确B、错
Theresearchersfoundtherearethousandsofgeneticdifferenceslinkedtosame-
ForfiveyearsIhavemaintainedournation’ssolidcommitmenttoscientific
ResearchershavefoundthevirusincivetcatsatalivefoodmarketinChina,b
Inthepastfewyears,I’vetaughtnonfictionwritingtoundergraduatesandg
她在其中扮演20世纪50年代到60年代的电影角色,这一系列类似电影剧照的作品令她一举成名。(beanimmediatehit)Afictionalar
Someconsumerresearchersdistinguish【C1】______"rational"motivesand"emot
Someconsumerresearchersdistinguish【C1】______"rational"motivesand"emot
Someconsumerresearchersdistinguish【C1】______"rational"motivesand"emot
Someconsumerresearchersdistinguish【C1】______"rational"motivesand"emot
随机试题
Themind-successconnectionisstrong,andmanyobstaclestooursuccessare
机械加压送风量应满足走廊至前室至楼梯间的压力呈递增分布,其中封闭楼梯间与走道之间
计算机中常用的数的表示格式有()。A.定点 B.浮点 C.小数 D.指数
有关洋地黄,以下哪些错误()A.与利血平合用可发生严重心动过缓、异位心律和心
A.直接蔓延 B.沿生殖道黏膜蔓延 C.经淋巴系统蔓延 D.经血液循环蔓延
闭角型青光眼用毛果芸香碱的目的是A.降低后房压力 B.减少房水生成 C.缩瞳
控制银行间债券市场信用风险的方式包括但不限于()。 A.交易数量的控制
下列有关税务行政复议被申请人说法正确的有()。A.被申请人是指作出该具体行政行
(2019年真题)根据票据法律制度的规定,下列情形中,导致汇票无效的有()
突发事件发生后,应当及时向毗邻省、自治区、直辖市人民政府卫生行政部门通报的机构是
最新回复
(
0
)