首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
It’s a good idea to apply sunscreen before heading to the beach if you don’t want to burn. But for marine animals like whales, t
It’s a good idea to apply sunscreen before heading to the beach if you don’t want to burn. But for marine animals like whales, t
admin
2019-06-23
76
问题
It’s a good idea to apply sunscreen before heading to the beach if you don’t want to burn. But for marine animals like whales, they don’t have that【C1】______Species like sperm whales can spend up to six hours at the ocean’s surface in between dives,【C2】______in the sunlight. So how do they protect themselves from a serious case of sunburn?
It turns out that their bodies have a similar defense【C3】______against the sun’s UV radiation as people. Blue whales—which have the lightest skin color of the three species—tan during their summer stay before【C4】______, back to their northern feeding grounds. Sperm whales don’t tan. They can receive an "overdose" of UV radiation during their hours at the ocean’s surface, and they have proteins that【C5】______protect their cells from UV damage. This process is【C6】______to how human bodies produce antioxidants in response to molecules that can cause a lot of genetic and cellular damage. And fin whales escape sun damage thanks to their high levels of melanin—a dark substance in the skin to protect humans from UV radiation.
Older whales and whales with less【C7】______of melanin in their skin—like blue whales—had the greatest level of damage in their mtDNA. Fin whales, which had the greatest amount of melanin, had the least amount of mtDNA damage.
Now that the ozone layer that shields Earth from UV radiation is gradually【C8】______it’s important to know what the consequences are for whales and dolphins, especially for【C9】______or endangered species. Although it’s difficult to tell what causes many of these skin conditions, UV damage is one cause. Even though whales have【C10】______defenses to UV radiation, high exposure can still be harmful.
A)similar B)diminishing G)liability D)migrating
E)mutual F)mechanism G)effectively H)jerking
I)instantaneously J)vulnerable K)content L)baking
M)inherent N)perspective O)option
【C2】
选项
答案
L
解析
空格所在句子主谓宾结构完整,且空格位于逗号后面,故应为分词作状语,说明鲸鱼在海面逗留六小时的状况。结合上文提到的关于“防晒”的内容,可以推断此处应该说鲸鱼每天“暴晒”六小时,故选baking最合适。
转载请注明原文地址:https://kaotiyun.com/show/bjX7777K
0
大学英语六级
相关试题推荐
Childrenwholivenearamainroadareingreaterdangerofcatchingpneumonia(肺炎)becausepollutionfrompassingtrafficdamag
Childrenwholivenearamainroadareingreaterdangerofcatchingpneumonia(肺炎)becausepollutionfrompassingtrafficdamag
Afterdecadesofdecline,theshareofmotherswhostayhomewiththeirchildrenhas【C1】______risenoverthelastseveralyears
TowardstheendofJune,auniquejointexpeditionbeganinthewatersnearIndonesia.Inanareaofremarkablemarinediversity
A、Theyuseamusinglanguage.B、Theycoverinternationalnews.C、Theyexpresspublicfeelingonlocalissues.D、Theyfocusonpro
A、Leaningtorelaxthemselvesbeforeaudience.B、listeningtocelebrities’publicspeakingasoftenaspossible.C、Speakinginp
Whenfisherieshavesunkorcollapsed,oneapproachtofixthesituationistosetupamarinereservewherefishingisbanned.
随机试题
使用人工呼吸机的注意事项中错误的一项是
房地产咨询业务包括()等。
下列属于中央固定收入的是( )。
某酒店一直十分重视服务质量问题,经常受到顾客的赞许。但是有一次酒店员工与顾客因为一点小事发生了争执,顾客十分不满意,并叫来了记者对此事进行曝光。此事件严重影响了该酒店声誉,导致该酒店顾客锐减。酒店经理为避免类似问题再次发生,开展了一次质量管理学习和整顿,让
A、 B、 C、 D、 C前一个图形变动其中一根“火柴”得到下一个图形,只有C符合。
中国历史上第一部较系统、较完整的封建法典是( )。
Whoistheauthor’sintendedaudience?Whyislightweightluggageimportantforthetravelingbusinesswoman?
Hewaspraisedfor______agreatcontributiontohiscountry.
A、Nevadahasthelargestpopulationgrowth.B、Morethan35millionpeopleliveinCalifornia.C、Wyominghasapopulationofabou
A、colorfulsociallifeB、drugsandprotestsC、slangheavenD、hot-roddersandBeatsB此题考查听细节的能力。关键是听到“TheSixties,withitsdrug
最新回复
(
0
)