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
In September, in Britain, you may see a lot of birds【C1】________on roofs and telegraph wires. These birds are swallows. They are
In September, in Britain, you may see a lot of birds【C1】________on roofs and telegraph wires. These birds are swallows. They are
admin
2023-03-13
61
问题
In September, in Britain, you may see a lot of birds【C1】________on roofs and telegraph wires. These birds are swallows. They are【C2】________ together because, very soon, they will be flying【C3】________ to much warmer lands, where they will find【C4】________ small flying insects on which they【C5】________ There are no such insects【C6】________ in Britain during the winter, as it is【C7】________cold for them.
The swallows settle, fly off, swoop, and【C8】________again. This they do many times, for they are making short【C9】________ flights in order to be fit for the long journey【C10】________ them.
【C11】________of these migrating birds leave Britain in the autumn. They fly【C12】________for hundreds of miles【C13】________they reach the warm lands of Africa. But not all the birds get there, for many of them perish in the stormy weather they meet with【C14】________ .
In the spring of the following year they【C15】________the long and tiring journey back to Britain. They return to the identical barn or tree in the【C16】________ district which they had left the【C17】________autumn. How do these birds find their【C18】________there and back over such vast distances? Nobody knows exactly【C19】________ , but it has something to do【C20】________ winds and air currents.
【C13】
选项
A、until
B、before
C、when
D、as
答案
B
解析
本题考查上下文句意的理解。根据47题对本句句意解释。before意为“在……之前”。
转载请注明原文地址:https://kaotiyun.com/show/Cp0D777K
本试题收录于:
公共英语二级笔试题库公共英语(PETS)分类
0
公共英语二级笔试
公共英语(PETS)
相关试题推荐
设A是3×4阶矩阵且r(A)=1,设(1,-2,1,2)T,(1,0,5,2)T,(-1,2,0,1)T,(2,-4,3,a+1)T皆为AX=0的解.求常数a;求方程组AX=0的通解.
设A,B为n阶矩阵,且A,B的特征值相同,则().
设产品的需求价格函数为Q=300-P2.(Ⅰ)求需求对价格的弹性;(Ⅱ)求当P=8,10,12时的需求对价格的弹性,并说明其经济意义.
举出定义在[0,1]上分别符合下述要求的函数:只在x=0右连续.而在其他点都不连续的函数
SupposeyouareamemberoftheStudents’Unionandyouruniversitywillholdawelcomepartyfornewenrolledstudents.Writea
Asimpleideasupportsscience:"trust,butverify".Resultsshouldalwaysbe【C1】________tochallengefromexperiment.Thatsimp
Asimpleideasupportsscience:"trust,butverify".Resultsshouldalwaysbe【C1】________tochallengefromexperiment.Thatsimp
[A]TherelativelylowtuitionfeesinAsiaarealsoamaindrawforprospectivestudents.Lastyear,onlinehighereducation
Whatistherelationshipbetweenthetwospeakers?
Whatarethesetwopeopletalkingabout?
随机试题
下列关于原核生物DNA聚合酶Ⅲ的叙述,错误的是
小儿化脓性骨髓炎的病变常累及
治疗中暑并发的低血压时不要使用血管收缩剂是因为
2.下列有关法的价值判断的观点正确的是?()
在双缝干涉实验中,当入射单色光的波长减小时,屏幕上干涉条纹的变化隋况是()。
汇款的方式主要有()。
丑注册会计师是L公司2009年度财务报表审计的外勤审计负责人,在审计过程中,需对负责存货审计的助理人员提出的相关问题予以解答,并对其编制的有关审计工作底稿进行复核。请代为作出正确的专业判断。丑注册会计师认为助理人员对存货项目审计的理解不正确的有(
人类的未知领域并非一个闭合的圆圈,而可能是在许多维度上呈开放型的无限空间。人类知识的积累,实际上是在这个无限空间里不断向更广阔更深邃处延伸的过程。无论对人类全体还是对每个个体而言,知识的增长都意味着所知更多、面临的未知领域更大。这段话主要想说明的是
设μ=f(x+y,x2+y2),其中f二阶连续可偏导,求.
TheneweststateintheUnitedStatesis______.
最新回复
(
0
)