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
外语
Here in the United States, before agricultural activities destroyed the natural balance, there were great migrations of Rocky
Here in the United States, before agricultural activities destroyed the natural balance, there were great migrations of Rocky
admin
2017-06-15
85
问题
Here in the United States, before agricultural activities
destroyed the natural balance, there were great migrations of Rocky
Mountain locusts(蝗虫). Great migrating hordes of these insects
once darken the skies on the plains east of the Rockies where crops【S1】______
were often destroyed; the worst years were those between 1874 to【S2】______
1877. One of these migrating swarms was estimated to contain 1. 24
billion locusts. During the another migration in Nebraska it was【S3】______
estimated that the swarm of locusts averaged half a mile high and
was 100 miles wide and 300 miles long. Usually, these swarms take
up from the ground against the wind, but, once airborne, they turn【S4】______
and fly with it. Warm convection currents(对流)help to lift them,
often at great heights. During the great locust plagues the situation【S5】______
in Nebraska became so serious that the original state constitution
had to be rewritten to take care the economic problems. The new【S6】______
document was known as "The Grasshopper Constitution". It is now
believed that these locusts were a migratory form or phase of the
lesser migratory locust, that is still common there. In this respect,【S7】______
the North American migratory locusts resemble their African
relatives. In both regions the migratory forms rise as a result of【S8】______
crowding and climatic factors. Migratory forms are apparently
natural adaptations which bring about dispersal when locust
populations become too crowded. Unfortunately for our farmers, the【S9】______
migratory form no longer seems to occur regularly, although there
was a serious outbreak as late as 1938 in midwestern United States
and Canada. Actually, there is no reason why the destructive
migratoiy form might not again appear if circumstances become【S10】______
favorable.
【S4】
选项
答案
up—off
解析
固定搭配中的介词误用。take off表示“起飞”,take up表示“拿起,开始从事,继续,吸收”。
转载请注明原文地址:https://kaotiyun.com/show/1UsK777K
0
专业英语八级
相关试题推荐
Youngpeoplearefacinganuncertainfuture.Asthe21stcenturydawned,theywerepromisedawealthofprospectsunless【M1】____
Americansfinditdifficulttoengageinanyactivityforpurepleasure.Wehavetohaveahigheraim—apurpose—foreverymome
IwasinnorthernKenya,whichissufferingthroughtheworstdroughttohittheHornofAfricain60years.Thetollofdepri
Formany,thepursuitofhappinessisalsothepursuitofprosperity.PartoftheAmericandreamistheabilitytoprovide【M1】__
Doctorsbaffledbyanunexplainedrashonpeople’searsorcheeksshouldbeonalertforaskinallergycausedtoomuch【M1】_____
Doctorsbaffledbyanunexplainedrashonpeople’searsorcheeksshouldbeonalertforaskinallergycausedtoomuch【M1】_____
Ifourbrainswerecomputers,we’dsimplyaddachiptoupgradeourmemory.Thehumanbrain,therefore,ismore【M1】______comple
Thenatureofworkischanging.Recenttechnologicaladvances,ashiftfrommanufacturingtoservice-basedorganizations,incr
Thenatureofworkischanging.Recenttechnologicaladvances,ashiftfrommanufacturingtoservice-basedorganizations,incr
A、Ithasarecordhigh.B、Ithasreached73percent.C、Ithasdecreasedby1percent.D、Ithasincreasedby6percent.A
随机试题
违反《兽药管理条例》规定,擅自转移、使用、销毁、销售被查封或者扣押的兽药及有关材料的
A.240nmB.260nmC.280nmD.570nmE.680nm酪氨酸的最大吸收峰在哪一波长附近
田某,男,21周岁,因故意杀人被人民检察院起诉至某中级人民法院,中级人民法院审理该案作出判决后,被告人在法定期限内提起了上诉。在本案中,高级人民法院在组成合议庭的时候,下列正确的说法是:()
下列各项会计处理中,体现实质重于形式的会计信息质量要求的有()。
控制()是控制的前提条件。
A、 B、 C、 D、 C题干图形中,阴影部分的面积依次是其中一个图形面积的1/6、1/5、1/4、1/3、(1/2),选项中只有图形C符合这一特征。
已知{an}是等比数列,则a4a7=一2.(1)a1和a10是方程x2+x一2=0的两个根(2)a1=32,且a6=一1
设有一密度均匀的球锥体,球的半径为R,锥顶角为π/3,求该球锥体对位于其顶点处的单位质点的引力.
TypesofMoneyThefunctionsofmoneyasamediumofexchangeandameasureofvaluegreatlyfacilitatetheexchangeofgood
A、Thehighestscholarshipinthecollege.B、Afearoffailureoradesireforsuccess.C、Ahighpraisefromteachersandparents
最新回复
(
0
)