A.哥白尼
B.伽利略
C.牛顿
D.爱因斯坦
答案:C
多面体ABCDE中,AB=BC=AC=AE=1,CD=2,AE⊥面ABC,AE∥CD.
求证:AE∥面BCD;
_____ there any potatoes here?[ ]
A. Is
B. Isn’t
C. Are
D. Aren’t