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
All over the earth’s surface is a layer of air which extends upwards for many miles. This air (1)_____ the oxygen without which
All over the earth’s surface is a layer of air which extends upwards for many miles. This air (1)_____ the oxygen without which
admin
2009-04-27
72
问题
All over the earth’s surface is a layer of air which extends upwards for many miles. This air (1)_____ the oxygen without which neither plants nor animals (2)_____ live. Its movements, temperature and pressure (3)_____ the weather, and it is a vehicle (4)_____ the clouds of water vapor (5)_____ condense and fall as rain. It forms a blanket which (6)_____ us from the extreme heat of the sun during the day and (7)_____ the extreme cold when the sun has (8)_____
It is chiefly (9)_____ air that sound travels, so that if there were no air we should (10)_____ practically nothing. The atmosphere is held (11)_____ the earth’s surface by the gravitational pull of the earth—that is, it has weight. High up it is thin (12)_____ near the surface it is compressed by the (13)_____ of air above, and is more dense. The weight of air pressing (14)_____ each square inch of surface at sea-level is nearly (15)_____ pounds, which means that the total force (16)_____ the skin of an average man is about 30,000 pounds. He is not, (17)_____ this because the pressure is equal in all directions and the pressure inside him is equal (18)_____ -that without, but should he go up in a balloon to a height at which the outside- pressure is (19)_____ he would suffer acutely. It is (20)_____ this reason that the cabins of aeroplanes are ’pressurized’.
选项
A、into
B、up
C、through
D、along
答案
C
解析
该句意为,声音主要通过空气传播,如果没有空气,我们实际上什么都听不到。
转载请注明原文地址:https://kaotiyun.com/show/ECa4777K
0
考研英语一
相关试题推荐
Despitethetemptationforparentstosayyestotheirchildren’swishes,researchshowsthere’saninsidioussidetochasing
Writeanessaybasedonthefollowingpiechart.Inyourwriting,youshould1)interpretthechart,and2)giveyourcomm
Strategyandcultureareamongtheprimaryleversattopleaders’disposalintheirnever-endingquesttomaintainorganizationa
Onthesurface,Marsisthepictureofdesolation.Abarrenlandremains【C1】______forhundredsofmillionsofyears,motionless【
Onthesurface,Marsisthepictureofdesolation.Abarrenlandremains【C1】______forhundredsofmillionsofyears,motionless【
[A]Sticktoyourinvestmentplan[B]Maintainliquidity[C]Focusontheannualratereturn[D]Acceptnormalmarketi
[A]Messup[B]Befrugal[C]Stayindependent[D]Cutyourbudgetforhouseholditems[E]Askquestions[F]Find
[A]Takeawalk[B]Lookatcurrenttrends[C]Brainstormwithfriends[D]ShareyouropinionsontheInternet[E]L
Universityusedtobeforaprivilegedfew.Insomecountriesitisnowalmostariteofpassage.Althoughthatisexcellentnew
Wecanlearnfromthefirstparagraphthat______.Itcanbeinferredfromthelastparagraphthat______.
随机试题
Ifit______tomorrow,we______putoffthevisittotheYangpuBridge.
急性胆囊炎引起的腹痛特点是
关于肠梗阻错误的是
加有少量钴盐(氯化钴)的硅胶(二氧化硅)颗粒干燥剂
证券服务机构为证券的发行、上市、交易等证券业务活动制作、出具( )时,应当勤勉尽责,对所依据的文件资料内容的真实性、准确性、完整性进行核查和验证。
在建设新农村号召的鼓励下,某地农村成立了一家农资公司,主要经营农产品和农副产品。该农资公司近11个月的玉米销售量为:根据以上材料,回答下列问题:运用算数平均数法进行预测,则第12个月的销售量预测值为()吨。
下列支出中,属于商业银行营业外支出的是()。
Butthesuccessofscience,bothitsintellectualexcitementanditspracticalapplication,dependsupontheself-correctingc
在VisualFoxPro中,如果在表之间的联系中设置了参照完整性规则,并在删除规则中选择了“限制”,当删除父表记录时,系统的反应是()。
有如下类声明:classHow{intk;public:How():k(99){}};则类How所拥有的构造函数的数量是
最新回复
(
0
)