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
16
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] 【C1】
选项
答案
O
解析
空格在指示代词that之后,应为名词。that所指与上一句内容有关,指“去沙滩之前先涂上防晒霜”。此处应选择option,表示海洋动物“没有那样的选择”。mechanism通常用于指事物本身内在的机制,不适宜用于指代“涂防晒霜”,故排除。
转载请注明原文地址:https://www.tihaiku.com/zcyy/2932300.html
相关试题推荐
BeforehefoundedOculusVR,PalmerLuckeyworkedattheUniversityofSouth
BeforehefoundedOculusVR,PalmerLuckeyworkedattheUniversityofSouth
BeforehefoundedOculusVR,PalmerLuckeyworkedattheUniversityofSouth
[originaltext]BeforeItellyouabouttheinterestingdiscoveryrelatedto
[originaltext]M:Alexandra,wheredidyouworkbefore?W:Iworkedatanairpor
[originaltext]M:Alexandra,wheredidyouworkbefore?W:Iworkedatanairpor
[originaltext]Iamfiredupfortheyearthatstretchesoutbeforeus.That
It’sagoodideatoapplysunscreenbeforeheadingtothebeachifyoudon’t
It’sagoodideatoapplysunscreenbeforeheadingtothebeachifyoudon’t
It’sagoodideatoapplysunscreenbeforeheadingtothebeachifyoudon’t
随机试题
Morethan15millionAmericansundergosurgeryeachyear,butsomeelective
下列关于液体燃烧的说法中,正确的是()。A.液体燃烧之前,液体可燃物先蒸
为保证合同的公平性,工程量清单中的第100章总则中对应的开办项目作为独立的工程
工程建设中的“四通一平”是指()。A、水通 B、电通 C、气通 D
在全球经济一体化背景下,若一国的国际收支盈余,则该国短期内最不可能出现的情况是:
贷款损失准备包括一般准备、专项准备和特种准备。其中,()指针对某一国家、地区、行
共用题干 一般资料:求助者,女性,30岁,公司职员。资料介绍:求助者长相漂亮,
某镇个体开业医师,收治一位不慎从高处摔下的儿童,诊断为右臂尺骨骨折。经接骨和其他
注册会计师为测试日常会计核算过程中作出的会计分录以及编制财务报表过程中作出的其他
在选择厂用电系统中性点接地方式时,下列哪些规定是正确的?()A.当高压厂用电系
最新回复
(
0
)