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
2023-08-18
14
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://tihaiku.com/zcyy/2937045.html
相关试题推荐
[originaltext]M:IhadprepareddinnerforeightpeoplebeforeMarycalledands
[originaltext]M:IhadprepareddinnerforeightpeoplebeforeMarycalledands
July11Ileftonmytriptoday.Havingbeenoverseasbefore,Ifeltsom
July11Ileftonmytriptoday.Havingbeenoverseasbefore,Ifeltsom
July11Ileftonmytriptoday.Havingbeenoverseasbefore,Ifeltsom
July11Ileftonmytriptoday.Havingbeenoverseasbefore,Ifeltsom
July11Ileftonmytriptoday.Havingbeenoverseasbefore,Ifeltsom
July11Ileftonmytriptoday.Havingbeenoverseasbefore,Ifeltsom
July11Ileftonmytriptoday.Havingbeenoverseasbefore,Ifeltsom
[originaltext]W:Doyouwantmetoexplainthesequestionsbeforetheexam?M:Wh
随机试题
WhattheGermanscallSchadenfreudetakingpleasureinthepainofothersis
Globalwarming,afterall,isn’tjustabouthottersummers.Astheearth’st
A.桑叶 B.射干 C.牛蒡子 D.蜕衣 E.山豆根治疗咽喉肿痛,证属热
道德品质的基础是()。A.道德信念 B.道德意志 C.道德认识 D.
关于挂牌公司重大资产重组进程终止,表述正确的有()。 Ⅰ.挂牌公司自愿选择终止
孙某、周某均为注册房地产经纪人,在A省共同发起设立甲房地产经纪公司(以下简称甲公
面对就业,A同学说:一线城市就业压力太大了可以选择二三线城市就业,B同学说:可以
关于《2010年国际贸易术语解释通则》(“Incoterms2010”),下列哪
按照韦氏智商分级标准,智力平常指的是IQ在()之间。 (A)80-119(
(2021年真题)下列各项中,应在企业资产负债表“预付款项”项目中填列的有()
最新回复
(
0
)