首页
登录
职称英语
Hardly anyone pays much attention to the air. It is【B1】______ , and we never
Hardly anyone pays much attention to the air. It is【B1】______ , and we never
游客
2023-07-29
21
管理
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. [br] 【B10】
选项
答案
air pressure is so great that air is sometimes called an invisible giant
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2879933.html
相关试题推荐
Sheismarrying____________(她不了解的人).amanshehardlyknows/amansheknowsnot
[originaltext]Thirtyyearsago,anyoneblaminglonelinessforphysicalilln
Thepartoftheenvironmentalmovementthatdrawsmyfirm’sattentionisthe
Thepartoftheenvironmentalmovementthatdrawsmyfirm’sattentionisthe
Thepartoftheenvironmentalmovementthatdrawsmyfirm’sattentionisthe
Thepartoftheenvironmentalmovementthatdrawsmyfirm’sattentionisthe
Thepartoftheenvironmentalmovementthatdrawsmyfirm’sattentionisthe
Thepartoftheenvironmentalmovementthatdrawsmyfirm’sattentionisthe
Thepartoftheenvironmentalmovementthatdrawsmyfirm’sattentionisthe
Thepartoftheenvironmentalmovementthatdrawsmyfirm’sattentionisthe
随机试题
全宗指南的内容不包括()。A.全宗内档案概况 B.档案馆概况 C.档案的内
支柱绝缘子选择时,不需要考虑的因素是()A.种类和型式 B.额定
9个月男孩,因腹泻、发热、咳嗽3天入院。大便10次/日,为水样便,无腥臭味,尿少
肺的结构和功能单位是( )。A.肺泡 B.肺小叶 C.肺泡囊 D.肺泡管
A.因人制宜 B.因时制宜 C.因地制宜 D.治未病 E.扶助正气治病时
五行中,水是金的()A.母 B.子 C.所胜 D.所不胜 E.
Thechangeinthatvillagewasmiraculou
建设单位应当将大型的人员密集场所和其他特殊建筑工程的消防设计文件报送公安机关消防
带状疱疹的局部治疗用药不包括()A.炉甘石洗剂 B.阿昔洛韦软膏 C.硼酸溶
钾血症最有效的降血钾疗法是 A.尿溶菌酶 B.尿pH值 C.内生肌酐清除率
最新回复
(
0
)