AVERAGE RESOURCES(资源) 620 m 3 water If we put flesh water and sea water together,we can each have 620 m 3 water.But remember,sea water is too salty for us to drink if the factories don’t process(加工)it first.So,620 m 3 is little.Saving water in daily use is important. 0.5 ...
感激不尽,5月20号之前给我答案,21.We are going to be very busy.There is a large ___ of work for us to do.number lot deal amount 22..Some children learn to speak and read and write when they are very young ___ average children.compa