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
2023-09-03
82
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:https://tihaiku.com/zcyy/2982939.html
相关试题推荐
[originaltext]Blamingcreditcardsforyoungadults’moneyabuseispopular
[originaltext]Blamingcreditcardsforyoungadults’moneyabuseispopular
[originaltext]AmericanvisitorstoEasternAsiaareoftensurprisedandpuz
[originaltext]W:I’mtryingtoloseweightbyrunning,butalltheexerciseis
[originaltext]W:I’mtryingtoloseweightbyrunning,butalltheexerciseis
[originaltext]W:Um,I’vebeenrackingmybrainsalldaytryingtofigureoutw
[originaltext]W:Um,I’vebeenrackingmybrainsalldaytryingtofigureoutw
[originaltext]W:Um,I’vebeenrackingmybrainsalldaytryingtofigureoutw
[originaltext]W:CouncilorManion,whatdoyouthinkoftheincreasinglyheavy
[originaltext]W:CouncilorManion,whatdoyouthinkoftheincreasinglyheavy
随机试题
Write2waysthatterminateanoffer.RevocationRejectionLapseoftimeDeatho
Rockclimbingisanactivityinwhichparticipantsclimbup,downoracross
某部战士小明精神饱满、动作敏捷、学习新事务快,工作作风顽强,军事素质非常过硬,但
A. B. C. D.
常用于检识生物碱的试剂是()。A.碘化铋钾B.醋酸镁C.盐酸镁粉D.三氯化铝E
行政指令:是指行政主体依靠行政组织的权威,运用行政手段,包括行政命令、指示、规定
试比较不同取样方式的优点与不足。
对于特别行政区,下列说法正确的是()。①特别行政区设立的依据是我国宪法②人大
在资金投入环节,提高效率的重点是( )。A.增大产出 B.扩大资金来源 C
(2019年真题)某县政府发布公告,要求北苑小区居民与县政府协商拆迁安置补偿款事
最新回复
(
0
)