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
2023-11-16
14
管理
问题
Lightning bugs can blink themselves because of a chemical substance [br]
(11)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、Because they have different physical construction.
B、Because they are more offensive than male lightning bugs.
C、Because they want to frighten their enemies.
D、Because they try to attract males to them.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3191861.html
相关试题推荐
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecaus
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecaus
Surprisinglyenough,modernhistorianshaverarelyinterestedthemselvesi
Theproblemhas______simplybecauseyoudidn’tfollowmyinstructions.A、raised
Hissupervisoraskedhimto______hisdepartureforhome,becausehispaperwas
Themilitantwassentencedtodeathbecauseof[br][originaltext]Acourt
Themilitantwassentencedtodeathbecauseof[originaltext]AcourtinYem
I______himtheChristmasgiftbymailbecausehecamehomeduringtheChristma
He______havebeennervousbecausehedidn’tgostraightin.A、oughttoB、mustC、s
Thenegotiations______becauseneithersidewouldcomprise.A、brokedownB、brokei
随机试题
Thereareseveralpossiblerelationshipsbetweenlanguageandsociety.Onei
[originaltext]KimBold(M)SusanKleiner(W)Now,listentoPartOneofthei
[audioFiles]audio_eusm_j01_295(20099)[/audioFiles]A、Gasstation.B、Policestati
[originaltext]W:Hey,youknow,Iamthinkingofpaintingourroom.Whatdoyou
任务要求 l??在我国中南部某居住小区内的平整用地上,新建带电梯的9层住宅,其
一端固定另端自由的细长(大柔度)压杆,长为L(图a),当杆的长度减小一半时(图b
预备犯、未遂犯和中止犯以及教唆犯、帮助犯的犯罪构成可以归人( )。 A.派生
(2016年真题)劳动者职业健康检查和医学观察的费用,由()承担。A.劳动者
关于起征点的说法,正确的是()。A.起征点的要求是课税对象未达到起征点的不征税
在起重机械和吊装工作中用于曳引、张拉、捆系吊挂、承载的主要绳索是()A.白棕绳
最新回复
(
0
)