石墨的晶体结构是（）。
A.斜方晶系
B.四方晶系
C.等轴晶系
D.六方晶系
参考答案：D
But for the help of my English teacher, I ________ the first prize in the English Writing Competition.[ ]
A. would not win
B. would not have won
C. would win
D. would have won
若水肿以面部浮肿为主，表情淡漠，动作迟缓，形寒肢冷，治以温补肾阳为主，方用（）
A.六味地黄丸
B.右归丸
C.左归丸
D.五皮饮
E.五苓散
my English teacher, I ________ the first prize in the English Writing Competition.[ ]