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是at about ten years 还是for about ten years
for about three years(提问)
已知Ag(NH3)2+ /Ag 的不稳常数和Ag+/Ag电极电势求Ag(NH3)2+ /Ag电极电势
比较Ag(NH3)2/Ag,Ag(S2O3)2^3/Ag,Ag(CN)2-/Ag,AgBr/Ag,AgCl/Ag标准电极电势大小
1.Everyone is about 2 years old.2.All of them are about 2 years old.有这2种说法么?
it was eight years ag和that was eight years ago有区别吗?
from 400 years ago和about 400 years ago 区别
[Ag(NH3)2]+是什么
ag.
无机化学电极电势题求解析Ag+/Ag AgI/Ag Ag(CN)2/Ag Ag(NH3)2/Ag哪个电极电势代数值大
make a 2 minutes presentation about you plans next 5 years我要作文
改同义句:we began to study here about 2 years ago.=we( )( )here( )about two years ago等等1.we began to study here about 2 years ago.=we( )( )here( )about two years ago2.I borrowed a book from Daniel.=Daniel()a book()().=Daniel(
how about your life in(r )years
it was about 100 years ago
Two years ago.about i love you.
About 2,300 years ago,there lived in Greak a great thinker n_____ Aristotle.About 2,300 years ago there lived in Greek a great thinker named Aristotle.He observed that feathers fell to the ground much more s_____ than stones.He concluded that heavy o
Jam about 7 years old.保持句意Jam ____ ____ about 7 years old.
we lived in London for about three years?用for about three years提问