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
2023-08-16
25
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] 【C8】
选项
答案
B
解析
空格在be动词和副词gradually之后,推断此处应为分词或形容词,说明现在臭氧层(ozone layer)所处的状态。通常指负面影响的consequences提示填入空格的词应为贬义词,因此选用diminishing,表明臭氧层正在逐渐变小,保护地球免受紫外线辐射的作用也在减小。
转载请注明原文地址:https://tihaiku.com/zcyy/2932307.html
相关试题推荐
[originaltext]M:Alexandra,wheredidyouworkbefore?W:Iworkedatanairpor
[originaltext]Iamfiredupfortheyearthatstretchesoutbeforeus.That
It’sagoodideatoapplysunscreenbeforeheadingtothebeachifyoudon’t
It’sagoodideatoapplysunscreenbeforeheadingtothebeachifyoudon’t
It’sagoodideatoapplysunscreenbeforeheadingtothebeachifyoudon’t
It’sagoodideatoapplysunscreenbeforeheadingtothebeachifyoudon’t
It’sagoodideatoapplysunscreenbeforeheadingtothebeachifyoudon’t
[originaltext]Goodmorning,class.Beforewebegintoday,Iwouldliketoa
[originaltext]Goodmorning,class.Beforewebegintoday,Iwouldliketoa
[originaltext]Goodmorning,class.Beforewebegintoday,Iwouldliketoa
随机试题
HerearetheanswerstosomeFrequentlyAskedQuestions(FAQ)abouttheCambr
PassageThree[br]Whatcouldbethemostappropriatetitleforthepassage?
某银行信贷审查人员在对一家借款企业进行财务分析时,发现该企业近3年来的流动资金占
患者妊娠50天,小腹隐痛不适,痛处不移,舌暗有瘀点,脉弦滑。其证候是()A
WhichisNOTtrueofAlfredNobel?AHew
共用题干 一般资料:求助者.女性,30岁,公司职员。案例介绍:求助者长相漂亮,
一般资料:求助者,男性,29岁,自考本科毕业生。因与父母有矛盾,前来求助。 以
肝素的临床用途有A.脑栓塞 B.心肌梗死 C.DIC晚期 D.体外抗凝
根据《中华人民共和国会计法》的规定,对随意变更会计处理方法的单位,县级以上人民政
假设研制出一种预防丙型肝炎的疫苗,要评价此疫苗的效果,你会选择何种人群作为你的研
最新回复
(
0
)