Is oxygen the only gas ___ helps fire burn?A that B / C which D what 相关知识点: 试题来源: 解析 A核心短语/词汇:help sb./ sth. (to) do sth. 帮助某人/某物做某事句子译文:氧气是唯一的助燃气体吗? 本题考查定语从句。___helps fire burn 用来修饰之前的名词gas, 该从句的引导词在定...
Is Oxygen the only gas ___ helps fire burn? A. it B. which C. what D. that 相关知识点: 试题来源: 解析 [答案]D [解析] [详解]考查定语从句。句意:氧气是唯一能让火燃烧的气体吗?本句是限定性定语从句,从句修饰名词 the only gas,the only gas是物体,名词被the only修饰时,关系词只能...
Fish ___ oxygen through their gills(鳃). III.单项填空: () 1. Air pollution can affect humans by___ sore eyes and respiratory problems, especially in children and___. A. cause, the old B. causing, the older C. causing, the elderly D. cause, the elderly ()...
答案解析 查看更多优质解析 解答一 举报 A 考查定语从句。Gas为先行词,在定从___ helps fire burn中作主语,且that作主语时不可省略。所以选A。 解析看不懂?免费查看同类题视频解析查看解答 特别推荐 热点考点 2022年高考真题试卷汇总 2022年高中期中试卷汇总 2022年高中期末试卷汇总 2022年高中月考试卷汇总...
[解答]答案:C这个句子的主语是water,谓语是will continue to be,表语是what it is today,补语是next in importance to oxygen.what 在句子中表示"什么的样子"就像She is no longer what she was ten years ago.她不再是十年前的样子了.as 不能引导表语从句.
解析 A [解析]答案A 解析:考查定语从句.先行词 gas ,helps fire burn是定语从句,关系词在定语从句中做主语,指物,又因为先行词被the only修饰,故用that. 故选:A. 氧气是能帮助火燃烧的唯一气体. 当先行词被the only,the very,the same等修饰时,只能用that不用which....
What is the main gas that plants take in from the air? A. Oxygen B. Carbon dioxide C. Nitrogen D. Hydrogen 相关知识点: 试题来源: 解析 B。本题考查植物的生理过程。植物主要从空气中吸收二氧化碳进行光合作用,选项 A 氧气是植物释放出来的;选项 C 氮气不是植物主要吸收的气体;选项 D 氢气也不...
What charge would an ion that has 11 protons, 11 neutrons, and 10 electrons would have? What is the charge of an oxygen ion? What type of charge do electrons carry? What is a hydrogen bond acceptor? Where do hydrogen ions come from?
A 考查定语从句。Gas为先行词，在定从___ helps fire burn中作主语，且that作主语时不可省略。所以选A。
Oxygen is a colorless, odorless, tasteless gaseous chemical element which appears in great abundance on Earth, trapped by the atmosphere. Many people are familiar with oxygen, because it is a vital component of the respiration process; without it, most organisms will die within minutes. A number...