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
31
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!
【C19】
选项
A、means of
B、amount of
C、way to
D、account for
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/C8p4777K
0
考研英语一
相关试题推荐
Youhavejustreceivedaletterfromacompany,whichrepliedyourapplicationforajobandaskedyoutogototheinterviewon
YourfriendMaryBrownwillgotoWashingtonD.C.nextmonth.WritealettertoTonywhoisthereandintroduceMarytohim.You
Thewinnertakesall,itiswidelysupposedincomputingcircles.Indeed,geekshavecoinedaword,"Googlearchy",forthewayi
Title:ParentsaretooPermissivewithTheirChildrenNowadaysYourcompositionshouldbebasedontheOutlinegiveninChin
Youaregoingtoreadatextaboutthetipsonpreparinganewgarden,followedbyalistofexamples.Choosethebestexamplef
Youaregoingtoreadatextaboutthetipsonpreparinganewgarden,followedbyalistofexamples.Choosethebestexamplef
Youforgotyourdictionaryonthetablewhenyouhadbreakfastinthedininghallthismorning.Writeanoticeoflosstoclearl
Imaginebeingaskedtospendtwelveorsoyearsofyourlifeinasocietywhichconsistedonlyofmembersofyourownsex.Howw
Imaginebeingaskedtospendtwelveorsoyearsofyourlifeinasocietywhichconsistedonlyofmembersofyourownsex.Howw
随机试题
工程施工实施阶段监理进行质量控制的基本内容有().
禁用于肾功能不全患者的抗菌药是
商品证券是表明对物质资料具有某种权利的有价证券,如汇票、支票等。
某变电站蓄电池内布置了4排蓄电池,其中2排靠墙布置,另2排合拢布置在中间。蓄电池室的总宽度除包括4排蓄电池的宽度外,要加的通道宽度可取()。
因素分析法首先要排序,排序的原则是( )。
某金属冶炼联合企业(增值税一般纳税人)2012年12月发生下列业务:(1)开采铜矿石42100吨;(2)采用托收承付方式销售铜矿石480吨,每吨不含税售价为250元,货物已发出,托收手续已办妥,货款尚未收到;(3)本月移送开采
甲在遗书中写道:“老伴早逝,大儿前年又不幸去世,儿媳带着两个孩子生活困难,好在二儿子大学已毕业,让我稍微宽心。我死之后,名下的全部遗产由大儿媳及其两个孩子继承。”甲在其后签名并注明日期。该遗嘱效力如何?()
下列关于宪法修改的表述,正确的是()(2016年一综一第20题)
在面向对象方法中,类的实例称为【】。
Somebirdsliketositonasheepbecause______.Theunderlinedword"they"inthelastsentenceofthefirstparagraphrefers
最新回复
(
0
)