Iusuallygetup7:00themorning.()A.in;atB.at;inC.in;inD.at;on
I usually get up _____ 7:00 ________ the morning.( )
A. in; at
B. at; in
C. in; in
D. at; on
下列热化学方程式中,△H能正确表示物质的燃烧热的是A.CO(g)+1/2O2(g)==CO2(g) 2020-05-13 …
氨气的燃烧热的热化学方程式NH3(g)燃烧生成NO2和H2O,已知(1)H2(g)+1/2O2(g 2020-05-14 …
TommywillgotoBeijing7:00themoringofJanuary30A.on, 2020-05-17 …
I'mmuchbetterchinesetheteacher'shelp.A.in,atB.at, 2020-05-21 …
填介词的!--Howisyoursubject?--IamgoodEnglishbutweakma 2020-07-17 …
已知:2H2(g)+O2(g)=2H2O(g)ΔH=-483.6kJ/mol下列说法不正确的是A. 2020-07-19 …
1.Thepicturetherightshowsthatallthenumbersarecoun 2020-07-20 …
设函数f,g,h∈R,且有f(x)=x+3,g(x)=2x+1,h(x)=x/2,求出f○g,g○ 2020-07-26 …
选择填空:1.Thehospitalisjustthesupermarketa.besidetob 2020-08-04 …
单项选择1.--Whattimeisit?--It's.A.twentytotwoB.fortypa 2020-10-30 …