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. it B. which C. what D. that 相关知识点: 试题来源: 解析 D [解析] 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,关系词只能用that。故选...
In summary, the question is asking which type of molecule has the highest average speed among oxygen, nitrogen, water, and carbon dioxide in a room. The equation 1/2 mv^2 = 3/2 kT states that the molecular speed of gases at constant temperature is inversely proporti...
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...
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 ...
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 ...
What is the hydrophobic part of the cell membrane? How are molecules transported across a cell membrane? Which type of molecule will require some amount of energy to cross the cell membrane? The lipid bilayer molecules do what for the cell? What is bulk transport cell membrane? Which ma...
1.What type of attraction exists between PF3 molecules?a) H-bonds b) Dispersion c) Dipole-Dipole d) Ionic2.What is the shape of the CS2 molecule?a) Linear b) Tetrahedral c) Bent d) Trigonal Pyramidal3.What type of attraction exists between CS2 molecules?a) H-bonds b) Dispersion c)...
What type of bond exists within the water molecule? A. polar covalent B. hydrogen bond C. ionic D. non-polar covalent Intra- and Intermolecular Bonding: Intramolecular bonding refers to the bonding happening within one molecule, such as covalent...
Is oxygen the only gas ___helps fire burn?( )A.thatB./C.whichD.what 相关知识点: 试题来源: 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. 结果一 题目...