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
71
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、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/3191860.html
相关试题推荐
Humansareuniqueintheextenttowhichtheycanreflectonthemselvesand
Humansareuniqueintheextenttowhichtheycanreflectonthemselvesand
Humansareuniqueintheextenttowhichtheycanreflectonthemselvesand
Humansareuniqueintheextenttowhichtheycanreflectonthemselvesand
Humansareuniqueintheextenttowhichtheycanreflectonthemselvesand
Humansareuniqueintheextenttowhichtheycanreflectonthemselvesand
Humansareuniqueintheextenttowhichtheycanreflectonthemselvesand
Humansareuniqueintheextenttowhichtheycanreflectonthemselvesand
Humansareuniqueintheextenttowhichtheycanreflectonthemselvesand
Humansareuniqueintheextenttowhichtheycanreflectonthemselvesand
随机试题
Inthesecondhalfofeachyear,manypowerfulstormsareborninthetropic
[originaltext]W:Ihaven’tseenyouhereforacoupleofweeks.Haveyoustoppe
SevenWaystoCreateaHappyHouseholdA)Everyfamilyisdifferent,wit
导致控制器主电故障的原因,下列叙述不正确的是()。A.断电 B.线路故障
关于完全垄断市场,下列说法正确的有()。 Ⅰ.完全垄断使稀缺资源得不到良好的配
施工成本管理应从多方面采取措施,具体包括()。A、组织措施 B、技术措施 C
共用题干 SpoiltforChoiceSomeresearchwhi
依据《中华人民共和国城乡规划法》,制定和实施城乡规划,应当遵循城乡统筹、合理布局
制定证券交易的业务规则的机构是证券业协会。()
项目风险管理中,风险等级是根据()评估确定的。A.风险因素发生的概率和风险管理
最新回复
(
0
)