首页
登录
职称英语
[originaltext] Most people picture sharks as huge, powerful, frightening pre
[originaltext] Most people picture sharks as huge, powerful, frightening pre
游客
2023-07-18
71
管理
问题
Most people picture sharks as huge, powerful, frightening predators, ready at any moment to use their sharp teeth to attack unwary swimmers for no reason. [29] This idea of sharks, however, contains many misconceptions.
First, there are about 350 species of shark, and not all of them are large.
A second misconception concerns the number and type of teeth, which can vary tremendously among the different species of shark. A shark can have from one to seven sets of teeth at the same time, and some types of sharks can have several hundred teeth in each jaw. It is true that the fierce and predatory species do possess extremely sharp and brutal teeth used to rip their prey apart. [30] Many other types of sharks, however, have teeth more adapted for grabbing and holding than for cutting and slashing.
Finally, not all sharks are predatory animals ready to strike at humans without warning. In fact, [31] only 12 of the 350 species of shark have been known to attack humans, and a shark needs to be provoked in order to attack. The types of shark that have the worst record with humans are the tiger shark, the bull shark, and the great white shark. However, for most species of shark, even some of the largest types, there are no known instances of attacks on humans.
选项
A、A shark attacks a person for no reason.
B、A shark attacks a person every time it sees one.
C、A shark attacks a person only if it is bothered.
D、A shark attacks a person only at night.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2848025.html
相关试题推荐
OverviewLikemanypeople,youmayexperiencecabin
OverviewLikemanypeople,youmayexperiencecabin
OverviewLikemanypeople,youmayexperiencecabin
OverviewLikemanypeople,youmayexperiencecabin
OverviewLikemanypeople,youmayexperiencecabin
[originaltext]Inanattempttoresisttherisingcostoffuelandfightthe
[originaltext]EducationisrequiredandfreeforeverychildintheUnited
[originaltext]EducationisrequiredandfreeforeverychildintheUnited
[originaltext]M:Hi!Cheryl.W:hello,Field!Howareyou?M:I’mfine.Wherea
[originaltext]M:Hi!Cheryl.W:hello,Field!Howareyou?M:I’mfine.Wherea
随机试题
[originaltext]ThatteacherknewmorethananyoneI’veeverknown,butatthesa
Our______sensitivitydecreaseswithage.Byage60,mostpeoplehavelost40p
Overcomingprocrastination:APrac
营养素的RNI是指人均需要量加A.2SD B.2倍 C.1~2SD D.1
滴丸制备的工艺流程一般为()。A.药材提取物→基质→熔融混合物→滴制→冷凝→洗
Thechangeinthatvillagewasmiraculou
补阳还五汤中君药黄芪的作用是A.补益元气 B.升阳举陷 C.益胃固表 D.
25岁,男性,胰岛素依赖型糖尿病患者,2天前中断胰岛素治疗后出现昏迷,血糖23m
下列工程造价控制内容中,属于工程造价动态比较内容的有( )。A、工程造价控制计划
(2018年真题)下列法人中,属于特别法人的是()。A.基金会法人 B.事业
最新回复
(
0
)