A. what B. which C. that D.it 相关知识点: 试题来源: 解析 3.C 【解析】考查定语从句的关系词。 句意:氧气是能助 燃的唯一气体吗?先行词为gas,指物,该空在从句中作 主语,不可省略,且先行词前有 the only 修饰,引导词只 能用 that 而不能用 which。 故选 C。 反馈 收藏 ...
Is oxygen the only gas _ helps fire burn? ()A. thatB. /C. whichD. what 相关知识点: 试题来源: 解析 A 这道题考查的是定语从句。先行词是 “gas”(气体),后面的 “helps fire burn”(有助于火燃烧)是定语从句,用来修饰先行词 “gas”。关系词在这个定语从句中做主语,表示物。这里有个重要的...
Naturally occurring oxygen is composed of three stable isotopes, 16O, 17O, and 18O, with 16O being the most abundant (99.762% natural abundance). Oxygen-16 is composed of8 protons, 8 neutrons, and 8 electrons. What is the atomic number of an isotope with a mass number of 193 and 116...
Discover a special group of electrons called valence electrons. Explore how electrons are arranged around the nucleus of an atom, where the valance electrons are located, and how to predict the number of valence electrons for an element. Related to this Questionwhat is the maximum nu...
with oxygen and delivering it to them. The best part of that is that now those who couldn't go out and do things because they were confined to their home are now able to get out and move around and do the things that they weren't able to do before. I love it. Technology is ...
An element that has the electron configuration (Ne)3s2 is in the group: a. 2. b. 5. Determine the number of (a) electrons, (b) protons, and (c) neutrons in iron (2656 Fe). What is the ratio of the number of electrons for each atom of lead over one atom of aluminum?
A. that B./ C. which D. what 相关知识点: 试题来源: 解析 答案见上本题考查定语从句。___helps fire burn 用来修饰之前的名词gas, 该从句的引导词在定语从句中做主语,不能省略,先行词有only 修饰时不能用which; what 不能引导定语从句,故选项A符合题意。 反馈 收藏 ...
百度试题 结果1 题目Is oxygen the only gas ___ helps fire burn A. which B. 。 what C. 。 that D. it 相关知识点: 试题来源: 解析 C 反馈 收藏
A.that B./ C.what D.it相关知识点: 试题来源: 解析 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。 分析总结。 gas为先行词在定从helpsfireburn中作主语且that作主语时不可省略反馈 收藏 ...
百度试题 结果1 题目()10. Is oxygen the only gas helps fire burn? C. which D. what A. that B./ 相关知识点: 试题来源: 解析 A 反馈 收藏