题目

“羌笛何须怨杨柳，春风不度玉门关”中的春风是指（     ）        A． 偏北风            B． 偏西风            C． 冬季风             D． 夏季风 答案：D．Who we know is as important as ________. [　　] A．how we knowB．that we know C．what we knowD．much we know