首页
登录
职称英语
It’s a good idea to apply sunscreen before heading to the beach if you don’t
It’s a good idea to apply sunscreen before heading to the beach if you don’t
游客
2023-08-11
49
管理
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 [br] 【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://tihaiku.com/zcyy/2918002.html
相关试题推荐
[originaltext]Iamfiredupfortheyearthatstretchesoutbeforeus.That’sb
[originaltext]Iamfiredupfortheyearthatstretchesoutbeforeus.That’sb
[originaltext]Milkwasabasicfoodofmanlongbeforehistorywaswritten.
[originaltext]Milkwasabasicfoodofmanlongbeforehistorywaswritten.
Accustomedthoughwearetospeakingofthefilmsmadebefore1927as"silen
Accustomedthoughwearetospeakingofthefilmsmadebefore1927as"silen
Accustomedthoughwearetospeakingofthefilmsmadebefore1927as"silen
Accustomedthoughwearetospeakingofthefilmsmadebefore1927as"silen
Accustomedthoughwearetospeakingofthefilmsmadebefore1927as"silen
Accustomedthoughwearetospeakingofthefilmsmadebefore1927as"silen
随机试题
RogerRosenblatt’sbookBlackFiction,inattemptingtoapplyliteraryrathe
Optimismcanhelpyoutobehappier,healthierandmoresuccessful.Pessimis
AsimplepieceofropehangsbetweensomeenvironmentallyfriendlyAmericans
Accordingtothepassage,mostmealsarenotincludedinthepriceoftoursmain
卫生部设立各类健康相关产品评审委员会,承担健康相关产品的A.研发设计工作 B.
标注的尺寸不是定位尺寸就是定形尺寸。()
可以用已知抗原或抗体来检测特定的相对应的抗体或抗原,是由于抗原抗体反应的A.特异
根据《统计法》的规定,统计调查表应当标明( )等标志。A.表号、制定机关、批准
在合同中应对双方应承担的风险进行明确的界定,一般情况下,下面说法正确的有()A.
缺铁性贫血采用铁剂治疗,观察疗效最早的参考指标是A、血红蛋白上升 B、网织红细
最新回复
(
0
)