首页
登录
职称英语
Lightning bugs can blink themselves because of a chemical substance [br] [origi
Lightning bugs can blink themselves because of a chemical substance [br] [origi
游客
2023-11-12
60
管理
问题
Lightning bugs can blink themselves because of a chemical substance [br]
Lightning bugs are one special species in nature, they have own feature in the abdomen of their bodies, in which there is a chemical substance. And they can light them up and control when they blink and how long they blink.(12)But why lightning bugs light up? The following reasons may account for this. They are basically to find a mate. It’s a way that lightning bugs communicate with each other. They use their blinking signals to attract each other.(13)The female lightning bugs have brighter and stronger light, because they are the ones who are trying to attract males to them.(12)And different species of lightning bugs have different patterns of flashing light to attract their own species. For example, if there are five different species of lightning bugs all in the same field, they can tell who is their same species and who is not.(12)On other condition, lightning bugs light up when they see their enemies. They aim to frighten and warn the enemies by doing this. Some researchers once made experiments on mice in 1997; they confirm that light given off by lightning bugs plays a warning role on mice. This result of research is beyond people’s expectation.
选项
A、They use blinking signals to communicate.
B、They use blinking signals to seek for food.
C、They use blinking signals to attract their own species.
D、They use blinking signals to frighten and warn enemies.
答案
B
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3180543.html
相关试题推荐
Manypeoplelefttheirhomelandbecauseofpoliticalpersecutionsandgreatfami
TheFBIsoundedawarningagainstapossibleattackintheUnitedStatesbecause
TheFBIsoundedawarningagainstapossibleattackintheUnitedStatesbecause
Helikesfiction,______Ilikepoetry.A、whileB、becauseC、althoughD、soA
Manypeoplelefttheirhomelandbecauseofpoliticalpersecutionsandgreatfami
Theeldestchildisthoroughly______becausetheyalwaysgivehimwhateverhew
CanadawillcallbackitsambassadorbecausetheTeherancourt[originaltext]
AntasariAzharwasdetainedbecause[br][originaltext]Indonesianpoliceha
AntasariAzharwasdetainedbecause[originaltext]Indonesianpolicehavedet
______humanbehaviormaybecausedbyeatingsubstancesthatupsetthedelicate
随机试题
Whendidtheoutcomeoftheelectioncomeout?[originaltext]IttooktheSup
【B1】______[br]【B9】______[originaltext]OneofAmerica’smostimportant(26)
Britishdoctorsaretolaunchamajorclinicaltrialtoinvestigatewhether
患者,男性,50岁。诊断为Ⅱ型呼吸衰竭,此时行血气分析检查显示A.PaO<60m
水泥标准稠度用水量测定时,维卡仪试杆下沉距底板深度为6mm±1mm即停止下沉,则
学校进行素质教育的基本途径是_____。
下列焊接方式中,现场梁主筋不宜采用的是( )。(2013) A、闪光对焊
Somedesirablechangeshavetakenplace
下列文化遗址,位于山东省境内的是: ①良渚遗址 ②大汶口遗址 ③二里头遗址
某企业用现金支付甲材料的运杂费l000元,应作分录为( )。A.借:在途物资1
最新回复
(
0
)