首页
登录
职称英语
Seafood could be going off a lot of menus as the world warms. More than half
Seafood could be going off a lot of menus as the world warms. More than half
游客
2024-10-21
38
管理
问题
Seafood could be going off a lot of menus as the world warms. More than half of a group of fish【C1】______ for the marine food web might die if, as 【C2】______, global warming reduces the amount of oxygen【C3】______ in some critical areas of the ocean—including some of our richest fisheries.
The prediction【C4】______a unique set of records that goes back to 1951. California has regularly【C5】______ its baby fish to support the sardine fishery. "There is almost no other dataset going back so far that【C6】______every kind of fish," says Tony Koslow of the Scripps Institution of Oceanography in La Jolla, California, who heads the survey. The survey records also include information 【C7】______ water temperature, the 【C8】______proportion of salt in a solution and the dissolved oxygen content.
Koslow’s team studied records of 86 fish species found【C9】______ in the samples and discovered that the abundance of 27 of them【C10】______ strongly with the amount of oxygen 200 to 400 metres down; a 20 percent drop in oxygen meant a 63 percent drop in the fish. There have been several【C11】______of low oxygen during the period【C12】______, mainly in the 1950s and since 1984. Global climate models predict that 20 to 40 percent of the oxygen at these depths will disappear over the next century 【C13】______ wanning, says Koslow— mainly because these waters get oxygen by mixing with【C14】______ waters. Warmer, lighter surface waters are less likely to mix with the colder, denser waters【C15】______.
Of the 27 species most【C16】______ by low oxygen, says Koslow, 24 were fish that spend the daytime in deep, dark waters below 200 metres to【C17】______ predators that hunt by【C18】______. There are 10 billion tonnes of fish globally—10 times the annual global commercial【C19】______—and they are a vital food for other fish and【C20】______ birds and mammals. [br] 【C14】
选项
A、outer
B、upper
C、surface
D、outside
答案
C
解析
形容词辨析题。根据上下文可知,深处海水通过与表层水中的氧气进行混合而获得氧气。且根据下文中的surface water可知,此处答案应为[C]surface“表面的”。[A]outer“外部的,外面的”;[B]upper“上面的,上部的”;[D]outside“外面的,外部的”,均不符合句意,故排除。
转载请注明原文地址:https://tihaiku.com/zcyy/3810658.html
相关试题推荐
Seafoodcouldbegoingoffalotofmenusastheworldwarms.Morethanhalf
Seafoodcouldbegoingoffalotofmenusastheworldwarms.Morethanhalf
Seafoodcouldbegoingoffalotofmenusastheworldwarms.Morethanhalf
Seafoodcouldbegoingoffalotofmenusastheworldwarms.Morethanhalf
Seafoodcouldbegoingoffalotofmenusastheworldwarms.Morethanhalf
Seafoodcouldbegoingoffalotofmenusastheworldwarms.Morethanhalf
Seafoodcouldbegoingoffalotofmenusastheworldwarms.Morethanhalf
Seafoodcouldbegoingoffalotofmenusastheworldwarms.Morethanhalf
Seafoodcouldbegoingoffalotofmenusastheworldwarms.Morethanhalf
Seafoodcouldbegoingoffalotofmenusastheworldwarms.Morethanhalf
随机试题
LanguageandHumanityLanguageispowerfulanditcanhe
[originaltext]M:Oh,we’dbetterstophereandwaittilltomorrow.W:Icouldn’
ParkingTicket(罚单)PaymentSystemParkingticketsissuedbythe
【B1】[br]【B2】[originaltext]Eversincethebreakingofthe"ironbowl"inC
[originaltext]W:Whatkindoftrainingdoesoneneedtogointothistypeofjo
判断下列图示结构何者为静定结构体系?()A. B. C. D.
砌体结构的设计原则是( )。 ①采用以概率理论为基础的极限状态设计方法 ②
A.4.5~5.4B.5.5~6.5C.7.0~8.5D.6.6~7.8E.7.
A.大气压力对水做功,水的内能增加 B.水克服大气压力做功,水的内能减小 C
“生活废弃物总量,垃圾收集方式、堆放及处理、消纳场所的规模及布局”等内容属于城市
最新回复
(
0
)