层酥在烘烤成熟与油汆成熟时，对干油酥与水油酥的配比要求前者是（），后者是（）。
参考答案：1：1；4：6
黄芪的药理作用是（）
A.延缓衰老
B.改善微循环
C.强心
D.增强免疫功能
E.调节糖代谢
— How much do you know about the 3D film technology?
— A little. Not until _____ the hot movie Avatar ______some about it.[ ]
A. did I see; did I begin to learn
B. I saw; I began to learn
C. I saw; did I begin to learn
D. did I see; I began to learn
