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
2023-09-01
64
管理
问题
Most people picture sharks as huge, powerful, frightening predators, ready at any moments to use their sharp teeth to attack careless swimmers without provocation. But, people may have some wrong ideas on the conception of sharks.
First, there are 350 species of shark, and not all of them are large. They range in size from the dwarf shark, which can be only 6 inches long and can be held in the palm of the hand, to the whale shark, which can be more than 55 feet long.
Second, the different species of shark vary tremendously in the number and type of teeth. A shark can have from one to seven sets of teeth at the same time, and some types of shark earl 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: many other types of shark, however, have teeth more adapted to grabbing and holding than to cutting and slashing.
Finally, not all sharks are predatory animals ready to strike out at humans. In fact, 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、All sharks have teeth.
B、A shark can have six rows of teeth.
C、A shark can have hundreds of teeth.
D、All sharks have extremely sharp teeth.
答案
D
解析
Which of the following is NOT true about a shark’s teeth?
转载请注明原文地址:http://tihaiku.com/zcyy/2974789.html
相关试题推荐
[originaltext]ThereisoneforeignproducttheJapanesearebuyingfastert
[originaltext]Hundredsofspeciesofmarinelifemanagetosurviveevenin
[originaltext]Hundredsofspeciesofmarinelifemanagetosurviveevenin
[originaltext]Banksarenotordinarilypreparedtopayoutallaccounts;th
[originaltext]M:Nextmonthyou’regoingtocelebrateThanksgivingDay.Whenis
[originaltext]M:Nextmonthyou’regoingtocelebrateThanksgivingDay.Whenis
[originaltext]M:(19)Weallknowthatgoingtocollegecansuckyourwalletdry
[originaltext]M:(19)Weallknowthatgoingtocollegecansuckyourwalletdry
Peoplethink______(与其说这位新市长谦虚,还不如说他虚伪).thenewmayorisnotsomuchhumbleas
[originaltext](26)Lastweek,wetoldhowtheEnglishlanguagedevelopedas
随机试题
Plantingsofcottonbioengineeredtoproduceitsowninsecticideagainstbollwor
[originaltext][12]LawshavebeenwrittentogoverntheuseoftheAmerican
按储存物品的火灾危险性分类,以下固体中()属于乙类危险物品。A.黄磷 B.硫
根据损伤的程度将愈合分为一期愈合与二期愈合,下列属于二期愈合的特点是:A.组织缺
A.代谢性酸中毒 B.呼吸性酸中毒 C.呼吸性酸中毒并发代谢性酸中毒 D.
用卡式定理计算如图所示梁C截面的挠度为()。
2010年10月,江夏市公用事业局所属客管处就本市新增的300个出租车营运的使用
在基础性金融产品中,风险最高的是()。A.股票 B.债券 C.基金 D
借记卡可实现实时扣账,具有转账结算、存取现金和消费等功能。( )
女性,38岁,2岁时患麻疹肺炎后,间断出现咳嗽,咳大量脓痰28年,有时间断咯血。
最新回复
(
0
)