首页
登录
职称英语
[originaltext] The turtle is a reptile with a bony or leathery shell. Any sh
[originaltext] The turtle is a reptile with a bony or leathery shell. Any sh
游客
2023-07-29
58
管理
问题
The turtle is a reptile with a bony or leathery shell. Any shelled reptile can be called a turtle, but in North America people commonly use the word tortoise to refer to members of a family of turtles that live entirely on land, reserving the word turtle for species that live in or near water.
Turtles are ancient life forms that first appeared on Earth during the Triassic Period, which extended from about 240 million to 205 million years ago. Turtles survived the disasters that wiped out the dinosaurs and many other creatures at the end of the Mesozoic Era about 65 million years ago.
There are about 270 living species of turtles, which are grouped into 12 or 13 families. These families axe further classified into two suborders: side-necked turtles and hidden-necked turtles. Side-necked turtles protect their heads by folding their necks sideways under the top edge of the shell. Hidden-necked turtles pull their heeds directly into the shell, using an up-and-down motion of the neck. Hidden-necked turtles are more widespread than side-necked turtles, Sea turtles, as well as a few other kinds of turtles, are considered members of the hidden-necked group even though they cannot fully withdraw their heeds.
Turtles inhabit every continent except Antarctica. Like all living reptiles, turtles are cold-blooded animals whose body temperature is influenced by the outside environment. For this reason, turtles are most abundant in warm tropical and subtropical climates.
选项
A、About 240.
B、About 205.
C、About 65.
D、About 270.
答案
D
解析
此题为数字题。文中明确指出“there are about 270 living species of turtles”。
转载请注明原文地址:https://tihaiku.com/zcyy/2880122.html
相关试题推荐
【B1】[br]【B11】[originaltext]Weoftenheartheexpression,"Everybodytalks
【B1】[br]【B10】[originaltext]Weoftenheartheexpression,"Everybodytalks
【B1】[br]【B9】[originaltext]Weoftenheartheexpression,"Everybodytalks
【B1】[br]【B8】[originaltext]Weoftenheartheexpression,"Everybodytalks
【B1】[br]【B7】[originaltext]Weoftenheartheexpression,"Everybodytalks
【B1】[br]【B3】[originaltext]Weoftenheartheexpression,"Everybodytalks
[originaltext]ThefirstpostalserviceinNorthAmericabeganinNewEnglan
[originaltext]ThefirstpostalserviceinNorthAmericabeganinNewEnglan
[originaltext]ThefirstpostalserviceinNorthAmericabeganinNewEnglan
[originaltext]Goodevening!Welcometothefirstmeeting,ofourspringcyc
随机试题
[img]ct_epem_epelisv_01621(20097)[/img][br][originaltext]JohnarrivedinLond
Inordertogetpaid,thebeneficiaryindocumentarycreditmustpresentdocumen
Completethenotesbelow.WriteNOMORETHANTHREEWORDSforeachanswer.[img]2
Inthelastthirdofthenineteenthcenturyanewhousingformwasquietly
[originaltext]W:Youdon’tlooksmartthismorning.Icanseeyou’renothappy.
软件测试的目的是()A.避免软件开发中出现的错误 B.发现软件中出现的错误
大连接体的主要作用不是A.传导和分散力 B.连接局部义齿各部分 C.恢复功能
供电单位或施工单位到用户变电站内施工时,工作票应由有权签发工作票的(
休克代偿期的临床表现是A.血压稍低、脉快、脉压缩小 B.血压正常、脉细速、脉压
初步设计的目的是为了阐述在指定的地点、时间和投资控制数额内,拟建项目在技术上的可
最新回复
(
0
)