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
2016-04-30
44
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/ZNG7777K
0
大学英语六级
相关试题推荐
TheAmericaneconomicsystemisorganizedaroundabasicallyprivateenterprise.It’s【B1】______economyinwhichconsumersdeterm
Somepeoplearguethatmoneyiseverything.Idon’tthinkso.WriteacompositionentitledMoneyIsNotEverything.Youshouldw
A、Theyarescientific.B、Theyaretoocomplicated.C、Theyshouldbebanned.D、Theyarenottruthful,buteffective.D细节题。村民们都知道医
Whensomebodycalls,firstofall,the【B1】______wouldofferhimacigaretteandacupoftea.Inthecountryside,【B2】______.old
Theestimatesofthenumbersofhome-schooledchildrenvarywidely.TheU.S.DepartmentofEducationestimatesthereare250,00
Theestimatesofthenumbersofhome-schooledchildrenvarywidely.TheU.S.DepartmentofEducationestimatesthereare250,00
A、Becausethestudentshavetopassallexaminationsbeforeenteringit.B、Becausethereisnoexaminationbeforetheyareaccep
WriteacompositionentitledALetterApplyingforAdmissiontoaUniversity.Youshouldwriteatleast150wordsbutnomoreth
Goinghungryisamajorcontributortoillhealth,particularlyamongchildren,andanewreportrevealshowlong-lastingtheda
CertainphrasesonecommonlyhearsamongAmericanscapturetheirdevotiontoindividualism:"Doyourownthing.""Ididitmywa
随机试题
我国公务员实行职级工资制的第一阶段内,公务员的工资按照不同职能可划分为
社会研究的题目()
结构中含有硒蛋白的酶是
关于工程量清单招标中计日工程报价技巧的说法,正确的是()。
因素分析法可分为()。
某交易者P185点的价格出售10张在芝加哥商业交易所集团上市的执行价格为1280点的S&P500美式看跌期权(1张期权合约的合约规模为1手期货合约,合约乘数为250美元),当时标的期货合约的价格为1200点。标的合约价格为1220点时,该看跌期权的市场价格
(),根据《合伙企业法》可以由合伙协议对出资方式、数额和缴付期限进行约定。
通过平行四边形的判断训练,学生判断长方形的能力提高了,判断三角形、圆形、不规则图形的能力没有提高。下列可用于解释这种现象的迁移理论是()。
毛泽东最早明确提出建立人民民主专政政权的问题是在( )
A、Hewroteonaseasideresort.B、Hetravelledwithhisfamily.C、Hestayedathometorelax.D、Hewentshoppingwiththewoman.
最新回复
(
0
)