quantities of, on average, on behalf of, in existence, on the whole, in panic, in appreciation of, be apposed of, decide on, in spite of
读图回答问题 黄河的大量泥沙主要来自( )
农田水分盈亏量指年降水量与农田作物用水量之差,农田作物用水量受作物品种、耕作制度、土地制度等影响,右图为我国部分地区农田水分盈亏量分布图,读图,完成下面问题。
Mr. Green didn't post the letter _________. He asked his son to do it for him.