The air we breathe is a mixture of gases. What is air? A. A liquid B. A gas C. A solid D. A powder 相关知识点: 试题来源: 解析 B。我们呼吸的空气是气体的混合物。选项 A 液体错误;选项 C 固体错误;选项 D 粉末错误。反馈 收藏 ...
This instrument is used to collect and store gases. What is it? A. Gas syringe B. Stirring rod C. Balance D. Crucible 相关知识点: 试题来源: 解析 A。A 选项 gas syringe 是气体注射器,用于收集和储存气体;B 选项 stirring rod 是搅拌棒;C 选项 balance 是天平;D 选项 crucible 是坩埚。题目...
一、单词拼写1.There is sound ___(科学的)evidence of what certaingases do to the atmosphere.2.The panda'snatural ___(栖息地)is the bamboo forest.3.This is the most ___(令人信服的)evidence thatI can find to prove my point.4.His books have sold more than 20 millioncopies ___...
( )(3)What is the meaning of the underlined word “represent” in the third paragraph? A.代表 B.分解 C.提取 D.组成 ( )(4)Which of the following statement is NOT true? A. There are four main kinds of gases in the air. B. Air cannot be seen....
英语语法问题We have learned that air is a mixture of gases,___oxygen,water,vapor and carbon dioxide are the most important for what they do.A.whoseB.in whichC.of whichD.where答案选的是C,想问下为什么不能选D,另外介词为什么
1一道英语选择题(定语从句)The behavior of gases is explained by ___ the kinetic theory.A.what scientists call B.what do scientists callC.scientists call D.scientists call it为什么选A 能顺便解释一下不选其他答案的原因吗? 2 一道英语选择题(定语从句) The behavior of gases is explained by ___...
百度试题 结果1 题目68. What scientists believe is that ___(有害的) gases led to heavy pollution. 相关知识点: 试题来源: 解析 harmful 有害的,形容词,harmful。反馈 收藏
百度试题 结果1 题目What scientists believe is that___(有害的) gases led to heavy pollution. 相关知识点: 试题来源: 解析 harmful有害的:harmful;句中修饰名词gases,用形容词形式即可. 科学家们相信有害气体导致了重污染.反馈 收藏
一道英语选择题(定语从句)The behavior of gases is explained by ___ the kinetic theory.A.what scientists call B.what do scientists callC.scientists call D.scientists call it为什么选A 能顺便解释一下不选其
What Are Greenhouse Gases ? What Are the Sources of What is the Prospect for FutureAre, WhyLevels, Atmospheric