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
2014-03-15
28
问题
Imagine fishermen walking down to the seashore, ready to carry out their early morning routine of preparing their boats and net. 【B1】______ they hope for a good catch of fish. But to their 【B2】______ , a horrible sight meets their still sleepy eyes. Thousands of fish have washed 【B3】______ dead. The cause of this mass destruction? A red tide!
Red tides are a global 【B4】______ . They have been observed on both the Atlantic and the Pacific coasts of the United States and Canada. They have also 【B5】______ in many other places. Though relatively few people are 【B6】______ 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 【B7】______ . A Philippines red tide expert told us that" 【B8】______ the fish kills, the Philippines has documented 1,926 cases of dead shellfish poisoning caused by red tides".
The term "red tide" 【B9】______ 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 【B10】______ of brown or yellow. The World Book Encyclopedia reports that "the discolored areas may range from 【B11】______ a few square yards to more than 2,600 square kilometers".
What causes such discoloration? Red tides are generally caused by several 【B12】______ of single-celled organisms. These tiny organisms have hair-like projections which they use to 【B13】______ themselves in water. There are about 2,000 varieties of these organisms, 30 of which carry poisonous 【B14】______ . These minute organisms usually stay in warm waters with high content of salt.
A red tide occurs when there is a sudden and rapid 【B15】______ of these organisms. The concentration of these organisms may 【B16】______ to 50,000,000 per quart of water! Although scientists do not fully understand why this happens. It is known that these organisms 【B17】______ when certain conditions simultaneously affect the water. These include abnormal weather, 【B18】______ temperatures, an oversupply of nutrients in the water, a generous 【B19】______ sunlight, and favorable water currents. When a heavy rainfall occurs, minerals and other nutrients are sometimes washed 【B20】______ the land into coastal waters. These nutrients can contribute to the breeding of the organisms. The result? Red tides!
选项
A、As a result
B、As it is
C、As expected
D、As usual
答案
D
解析
这里表示“像往常一样”。C项的意思与hope重复;A项和B项不合题意。
转载请注明原文地址:https://kaotiyun.com/show/ywhi777K
0
在职申硕(同等学力)英语
相关试题推荐
Themediacanimpactcurrentevents.AsagraduatestudentatBerkeleyinthe1960s,Irememberexperiencingtheeventsrelated
Thefirststepbeforemakinganydecisionto______wastodetermineexactlywhodidthekilling.
Somepeoplefeelsadaboutglobalizationbecausetheybelieveitwill______Whatisthewriter’sattitudetowardsglobalizatio
Whywasthehydraulicfuelpumpsealimportantforthespaceshuttle?ThegreatsignificanceofVoss’sfindingsliesin______.
Oneofthereasonswhyscienceisimportantforchildrenisthatmanyofthemwill______Thereisnodoubtthatchildrenlike
Averyimportantworldproblemistheincreasingnumberofpeoplewhoactuallyinhabitthisplanet.Thelimitedamountoflanda
Americanculturehasnotbeenimmunetoculturalinfluencesfromoutside.TheideaofdemocracycamefromtheancientGreeks:th
Parentscannomorebefriendstotheirchildrenthanteacherscanbetotheirstudents.Fortheessenceoffriendshipisrecipr
Wilmutmaintainsthatcloninganimalshastremendouspotentialforhelpingpeople.ClonedSheep,hesays,couldbeusedaslivin
Childrenaregettingsofattheymaybethefirstgenerationtodiebeforetheirparents,anexpertclaimedyesterday.Today’
随机试题
填表列出“啊”的部分变读规律:
患者男性,28岁,肾移植术后1个月,口服环孢素、骁溪、强的松免疫抑制治疗,肌酐下降至100mmol/L。近1周患者肌酐缓慢上升至160mmol/L,日尿量在2000~2500ml,无发热,血压150/95mmHg,环孢素浓度350mmol/L,诊断考虑最可
腹部脏器中最容易受损伤的器官是()
A、足阳明胃经B、足厥阴肝经C、足少阳胆经D、足太阳膀胱经E、手少阳三焦经痄腮腮部肿胀,是由于风温邪毒壅结于
按照《城市商品房预售管理办法》的规定,以下关于商品房的销售的规定,()选项是正确的。
关于流动比率和速动比率,下列说法错误的是()。
某学校的教授中有一些是足球迷。学校管理委员会的成员们一致要把学校的足球场改建为一座写字楼,以改善学校的收入状况。所有的足球迷都反对将学校的足球场改建成写字楼。如果以上陈述都为真,则下列哪项也必为真?()
A.条件(1)充分,但条件(2)不充分B.条件(2)充分,但条件(1)不充分C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分D.条件(1)充分,条件(2)也充分E.条件(1)和(2)单独都不充分,两个条件联合起来也不充分
WriteonANSWERSHEETTWOanoteofabout50-60wordsbasedonthefollowingsituation:WritetoyourfriendDavid/Amyandin
Ifyoulooktotheleft,youwillseeariverofgreat(wide)______.
最新回复
(
0
)