首页
登录
职称英语
[originaltext] Hundreds of species of marine life manage to survive even in
[originaltext] Hundreds of species of marine life manage to survive even in
游客
2024-05-15
43
管理
问题
Hundreds of species of marine life manage to survive even in the darkest depths of the ocean. These tenants of the sea have evolved some extremely ingenious devices for locating their food and enemies.
Where the light is very dim, some of these deepwater species have developed enormous eyes with almost telescopic lenses, very much like those of owls. Others, especially the fish that survive where there is no light at all, are quite blind but have developed long feelers that enable them to identify and collect stray bits of food that come within a considerable radius of them.
Some inhabitants of the sea supply their own light. They have built-in torches that they can switch on and off, depending on whether they are pursuing or being pursued. Some have regular lamps, spots of steady light, which spread a faint glow through the water around them. One deepwater squid (鱿鱼) can spray a luminous fluid that lights up its immediate vicinity, a neat variation on the ink ejected by its cousins nearer the surface to becloud and darken the water. It is supposed that about half of the varieties of fish living in the dark depths of the ocean have some power of illumination.
选项
A、Identifying and collecting food.
B、Protecting themselves.
C、Eating food.
D、Fighting against the enemies.
答案
A
解析
事实细节题 有些鱼类由于视力弱,它们就依靠触须来辨别和获取食物。
转载请注明原文地址:http://tihaiku.com/zcyy/3599205.html
相关试题推荐
[originaltext]W:Iamverysorrytohearthatthecomputeryouboughtfromour
[originaltext]Ofthethousandsofdifferentkindsofanimalsthatexistin
[originaltext]Differentcountriesanddifferentraceshavedifferentmanner
[originaltext]Differentcountriesanddifferentraceshavedifferentmanner
[originaltext]W:Well,weheardsomepeoplejustnowwhoseemtofeelthatothe
[originaltext]W:Well,weheardsomepeoplejustnowwhoseemtofeelthatothe
[originaltext]M:Willthatbecashorcharge?W:IwanttopaybycheckifIma
[originaltext]M:Willthatbecashorcharge?W:IwanttopaybycheckifIma
[originaltext]Americansaresufferingfromaserioussleepdeficitwhileal
[originaltext]Americansaresufferingfromaserioussleepdeficitwhileal
随机试题
Theymadedetailedinvestigationsto______themselveswiththeneedsoftherural
______inancienttimes,thebookstillappearstoreaderstoday.A、Thoughwritten
WelivetodayindebtedtoMcCardell,Cashin,Hawes,Wilkins,andMaxwell,an
传输设备在传输监管、故障、屏蔽或自检信息期间,如火灾报警控制器发出火灾报警信息,
收益性是指债券能为投资者带来一定的收入,即债券投资的报酬。在实际经济活动中,债券
患者女,45岁,乳腺癌,准备手术治疗,护士与其沟通术前注意事项。沟通过程中,该护
发行人董事、监事、高级管理人员在()内曾发生变动的,应披露变动情况和原因。A:
张某,女,30岁,工人。月经量多,患者近3年来月经常常提前,且出血量多,行经10
对水电厂的屏面布置描述正确的是()。 A.同类安装单位的屏面布置应一致,当不同
初产妇活跃期停滞的诊断标准是宫口不再扩张A.0.5h以上 B.2h以上 C.
最新回复
(
0
)