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
Hardly anyone pays much attention to the air. It is【B1】______ , and we never feel it unless a strong wind【B2】______ along, blowi
Hardly anyone pays much attention to the air. It is【B1】______ , and we never feel it unless a strong wind【B2】______ along, blowi
admin
2010-03-26
40
问题
Hardly anyone pays much attention to the air. It is【B1】______ , and we never feel it unless a strong wind【B2】______ along, blowing things around. But even though we are rarely【B3】______ of it, the air is always around us. It is an amazing and very powerful substance, with【B4】______ that few people know anything about.
We live in a world that is always in【B5】______ . Even still air and ice and solid rock are【B6】______ with movement. This movement is the dancing of the tiny molecules that make up all matter. The molecules, in mm are made up of still tinier atoms, which are the smallest units of【B7】______ .
In air, which is a mixture of gases, this dance takes the form of a flee-for-all, in which【B8】______ molecules move at a speed of nearly 250 miles an hour and bump into other molecules five thousand million times a second.【B9】______ . Usually we don’t feel this pressure because it is equaled by pressure from inside our bodies.
In fact,【B10】______ . At this very minute, your body is supporting 14 tons of air pressure.
【B11】______ . We can rarely see this water, but it is there just the same, like a huge ocean over our heads.
【B4】
选项
答案
characteristics
解析
转载请注明原文地址:https://kaotiyun.com/show/1xk7777K
0
大学英语四级
相关试题推荐
Westernerstendtopaymoreattentiontothecentralobjectwhenlookingatapainting.Nisbett’sresearchshowsthatAmericans
A、Itisthelargestlanguagefamily.B、Itwasoriginated4,900yearsago.C、ItcontainsallthelanguagesspokeninEurope.D、M
Forthispart,youareallowed30minutestowriteamessageforoneofyourparentsontheoccasionofhis/herbirthdayusingn
A、At5p.m.B、Atabout8p.m.C、At7p.m.D、Before5p.m.CW:Whenwillmyrefrigeratorbefixed?M:Well,it’s5p.m.bymywat
ThepassagefocusesontheneedforAmericanstolearnforeignlanguages.LearningEsperantohasbeendemonstratedtohelpwith
In1997,devoteesofhomeelectronicseagerlyawaitedtheDVDplayer,anewdevicethatcouldplaymovieswithoutvideotape,and
A、Sherarelymakesmistakes.B、Herbossishardtoworkwith.C、Shealwaystellsotherswhatshethinks.D、Sheregrettedhaving
1.Althoughitisconvenientandenjoyabletoownacar,peoplehavetosuffertroublescausedbytrafficjam______.2.Consider
A、Heneverdriveshiscarinordertoavoidaccidents.B、Heoftensuffersfromtheheavytraffic,too.C、Hecan’tagreewiththe
A、LeadersoftheSouthernrebellion.B、SlavesintheSouthernstates.C、Northernopponentsofthewar.D、Southernsoldiers.A细节理
随机试题
A.脑膜刺激征阳性B.皮肤有出淤点C.呕吐、脓血便D.惊厥停止后神志即恢复正常E.肢体瘫痪流行性脑脊髓膜炎(败血症期)
氢火焰点不燃的原因可能是()。
以辉绿岩、玄武岩等天然岩石为主要原料制成的铸石管,其主要特点有()。
“天将降大任于斯人也,必先苦其心志。劳其筋骨,饿其体肤,空乏其身,行拂乱其所为,所以动心忍性,增益其所不能。”这段话体现的德育方法是()。
4731×80×25×10的值为( )。
实现算法所需的存储单元多少和算法的工作量大小分别称为算法的【】。
InthefirstyearorsoofWebbusiness,mostoftheactionhasrevolvedaroundeffortstotaptheconsumermarket.Morerecentl
Howwarmparentsarewiththeirchildrenhasastronginfluenceonthechildrenspersonalities.Boywhoarehighlymasculine,fo
Womenhavelongbeenmoreinnumberthanmenoncollegecampuses.Theyalsoholdmoreadvanceddegreesthantheirmale(1)______.
【S1】【S9】
最新回复
(
0
)