首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
Imagine fishermen walking down to the seashore, ready to carry out their early morning routine of preparing their boats and net.
Imagine fishermen walking down to the seashore, ready to carry out their early morning routine of preparing their boats and net.
admin
2012-05-19
27
问题
Imagine fishermen walking down to the seashore, ready to carry out their early morning routine of preparing their boats and net.【C1】______they hope for a good catch of fish. But to their 【C2】______, a horrible sight meets their still sleepy eyes. Thousands of fish have been washed【C3】______dead. The cause of this mass destruction? A red tide!
Red tides are a global【C4】______. They have been observed on both the Atlantic and the Pacific coasts of the United States and Canada. They have also【C5】______in many other places. Though relatively few people are【C6】______them, red tides are not new.
In the Philippines, a red tide was first seen in the province of Bataan in 1908. Since then, red tides have been seen in many other【C7】______. A Philippines red tide expert told us that "【C8】______the fish kills, the Philippines has documented 1, 926 cases of dead shellfish poisoning caused by red tides. "
The term "red tide"【C9】______the discoloration of water that sometimes occurs in certain areas of the ocean or sea. Although the color is often red, it may also be【C10】______of brown or yellow. The World Book Encyclopedia reports that "the discolored areas may range from【C11】______a few square yards to more than 2,600 square kilometers. "
What causes such discoloration? Red tides are generally caused by several【C12】______of single-celled organisms. These tiny organisms have hair-like projections which they use to【C13】______themselves in water. There are about 2,000 varieties of these organisms, 30 of which carry poisonous【C14】______. These minute organisms usually stay in warm waters with high content of salt.
A red tide occurs when there is a sudden and rapid【C15】______of these organisms. The concentration of these organisms may【C16】______to 50,000,000 per quart of water! Although scientists do not fully understand why this happens, it is known that these organisms【C17】______when certain conditions simultaneously affect the water. These include abnormal weather, 【C18】______temperatures, an oversupply of nutrients in the water, a generous【C19】______sunlight, and favorable water currents. When a heavy rainfall occurs, minerals and other nutrients are sometimes washed【C20】______the land into coastal water. These nutrients can contribute to the breeding of the organisms. The result? Red tides!
【C2】
选项
A、satisfaction
B、disappointment
C、astonishment
D、regret
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/08p4777K
0
考研英语一
相关试题推荐
Studythefollowingtableaboutthechangesinpeople’sdietandwriteanessayto1)describethetable,2)interpreti
WhatscientistsJohanFeenstraandRobHayesdidwasthatTheansweriscloserto’yes’(Line1,Paragraph3)because
Studythefollowingdrawingcarefullyandwriteanessayinwhichyoushould1)describethedrawing,2)interpretitsm
Onedayyoudinedatyourlocalrestaurant.Youarenothappywiththefoodaswellastheservice.Writealettertotherestau
Mountaineeringisasportwhichinvolves______.Mountaineeringisalsoateamsportbecause______.
Title:PeopleShouldbeRewardedAccordingtoAbility,ortoAgeandExperienceYourcompositionshouldbebasedontheoutline
Title:ParentsaretooPermissivewithTheirChildrenNowadaysYourcompositionshouldbebasedontheOutlinegiveninChin
ImaginetheU.S.economicgainsofthe1990s,andwhatcomestomind?Perhapsitwashowthestockmarketruled:Allthoseiniti
Imaginebeingaskedtospendtwelveorsoyearsofyourlifeinasocietywhichconsistedonlyofmembersofyourownsex.Howw
Imaginebeingaskedtospendtwelveorsoyearsofyourlifeinasocietywhichconsistedonlyofmembersofyourownsex.Howw
随机试题
行政机关作出解除冻结决定的,应当及时()。
关于甲状腺乳头状癌下列哪项错误
患者,女,38岁。头晕,乏力,血压:150/80mmHg,血钾:3.0mmol/L,MR检查双肾上腺多发小结节影,最有可能的诊断是
维持细胞外液渗透压的阳离子主要是
肾小球滤过膜应包括
天成公司是一家股份有限责任公司,其发起人是甲、乙、丙、丁、戊。公司设立方式为募集设立,由发起人向社会公开募集设立。董事会成员为5人,甲、乙、丙、丁、戊同时也是公司董事会成员。假设公司章程中规定了签订交易额在500万以上的买卖合同,必须由股东大会决议通过
分析某行业是否属于增长型行业,可采用的方法有()
王明抄写一份报告,如果每分钟抄写30个字,则用若干小时可以抄完。当抄完时,将工作效率提高40%,结果比原计划提前半小时完成。问这份报告共有多少字?()
随机通达教学是依据()学习理论而提出后种教学方法。
Whatdoesthespeakermainlytalkabout?Howtoget______.
最新回复
(
0
)