乙缩醛是构成白酒风味特征的（）
A、骨架成份
B、协调成份
C、微量成份
参考答案：A
薄荷主产于
A．极面观呈三角形，角端各有一个萌发孔B．呈类球形或长圆形，外壁有细点状条状雕纹C．呈球形、黄色、外壁具细刺状突起D．呈球形或椭圆形，表面有似网状雕纹E．花粉粒少见，呈圆球形，外壁近于光滑
It's always difficult being in a foreign country, _____ if you don't speak the language. [ ]
A. extremely
B. naturally
C. basically
D. especially
