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
42
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.
【B7】
选项
答案
elements
解析
转载请注明原文地址:https://kaotiyun.com/show/nxk7777K
0
大学英语四级
相关试题推荐
Westernerstendtopaymoreattentiontothecentralobjectwhenlookingatapainting.AncientGreeksocietyistheprototype
A、Itisthelargestlanguagefamily.B、Itwasoriginated4,900yearsago.C、ItcontainsallthelanguagesspokeninEurope.D、M
It’sageneralbeliefthatachild’slatercharacterandpersonalityis______decidedbyhisearlyexperiencesbothathomeand
A、Atlowlatitudes.B、Atmid-latitudes.C、Athighlatitudes.D、Athighaltitudes.CWheredothegreatestchangesofclimatestak
ThepassageismainlyaboutthepovertyofthewholeAfricawhichisinslowdevelopment.Accordingtobusinessleaders,Africa
Whatissaidaboutthe"beautymachine"inthefirstparagraph?Accordingtothelastparagraph,wecanknowthat______.
A、Removeit.B、Replaceit.C、Pressabutton.D、Notmentioned.A根据对话中“itstartswhenyouremoveit!”可以判断此题答案为A
NapoleonBonapartewaskeentolearnEnglishwhileinexile,documentsshowinBritainforthefirsttimereveal.
A、BecausetheBritishdidn’thavetherighttodoso.B、Becausethesoldiersdidn’tknowfarming.C、Becausethesoldiersdidn’t
A、November.B、December.C、June.D、March.A短文第二句明确提到NovemberisNationalAdoptionMonth。
随机试题
广告推广
A.131IB.127IC.125ID.124IE.123I在放射免疫分析中,用于标记抗原的核素是
张某与李某共有一台机器,各占50%份额。双方共同将机器转卖获得10万元,约定张某和李某分别享有6万元和4万元。同时约定该10万元暂存李某账户,由其在3个月后返还给张某6万元。后该账户全部款项均被李某债权人王某申请法院查封并执行,致李某不能按期返还张某款项。
【2017年】某企业销售原材料取得收入40000元,该材料成本为30000元,出租设备取得租金收入2000元(不含增值税),计提该设备折旧1200元。不考虑其他因素,上述业务导致当期营业利润增加()元。
房地产业属于第()产业。
A、 B、 C、 D、 C样式的叠加。第一个图和第二个图叠加之后得到第三个图。答案选C。
声音的高低由()决定。
设f(x)在[a,b]上可导,且f’+(a)>0,f’-(b)>0,f(a)≥f(b),求证:f’(x)在(a,b)至少有两个零点.
[*]
Mostofusgothroughlifeadding______toknowledge,polishingaconcepthereorthere,doinganexperiment,contributingafew
最新回复
(
0
)