首页
登录
职称英语
[originaltext] Whales--or their ancestors--were once land animals. Scientist
[originaltext] Whales--or their ancestors--were once land animals. Scientist
游客
2024-06-08
33
管理
问题
Whales--or their ancestors--were once land animals. Scientists believe that they roamed the earth about 150 million years ago.
The land-dwelling ancestors of this modem king of the sea were hunters with legs and the jaws and teeth of killers. Their favorite hunting grounds were probably shallow waters near the mouths of rivers or off a level stretch of coast, for fish, both finny and shell, were then more plentiful in the water.
Ages passed, and it became easier for these creatures to swim than to walk; millions of years later they were able to do without legs altogether. Now their hind legs had shrunk so that mere traces of them can be found under the skin when a whale is dissected.
选项
A、To escape from their enemies.
B、To catch more food.
C、To use their developing flippers.
D、To swim.
答案
B
解析
事实细节题 由于鲸鱼捕食的猎物是各种鱼类,久而久之,为了捕食到更多的猎物,它们逐渐从陆地转移到了海里。
转载请注明原文地址:https://tihaiku.com/zcyy/3625518.html
相关试题推荐
[originaltext]Therearetwokindsofmemory:short-termandlongterm.Info
[originaltext]Therearetwokindsofmemory:short-termandlongterm.Info
[originaltext]Whatisthebestwaytolearnalanguage?Weshouldremember
[originaltext]W:Hello,Tom.ThisisMary.Sorrytobotheryou,butI’mhaving
[originaltext]W:Morning.CanIhelpyou?M:Well,I’mnotreallysure.I’mjus
[originaltext]W:Morning.CanIhelpyou?M:Well,I’mnotreallysure.I’mjus
[originaltext]W:Morning.CanIhelpyou?M:Well,I’mnotreallysure.I’mjus
[originaltext]M:You’reawonderfulcook,Anna.Everythingissogood.W:Glad
[originaltext]M:You’reawonderfulcook,Anna.Everythingissogood.W:Glad
[originaltext]M:You’reawonderfulcook,Anna.Everythingissogood.W:Glad
随机试题
Whydon’tbirdsgetlostontheirlongflightsfromoneplacetoanother?Sc
在DB2的SQL语言中定义基本表时,可对数据列用固定类型作说明,这是语言保证数据
双排脚手架每一连墙件的覆盖面积应不大于()。A.架高不大于50m时,40m2
舌盲孔表示哪种组织的胚胎起源位置A.腺垂体(垂体前叶) B.神经垂体(垂体后叶
男,6岁半,为河中游泳时溺水,现场心肺复苏成功后转入ICU病房,气管插管后用人工
下图是“一带一路”示意图,读图完成问题。 “一带一路”东部连接快速发展的中
下列有关内部审计的报告的表述中,错误的是:A、应当在正式出具之前征求被审计单位意
患者,男性,38岁。吸烟15年,每天30支左右,冷库工作8年。近来,右小腿持续性
一般而言,影响风险承受能力的首要因素是( )。A.年龄 B.财富 C.收入
(2016年真题)电子商务所涉及的四流中,具有明显双向传递特征的是()A.
最新回复
(
0
)