治膏淋,首选()。
A.瞿麦
B.关木通
C.萆薢
D.滑石
E.海金砂
参考答案:C
He was so pleased with all _____ we had done for him _____ he wrote us a letter to praise us for it.
A.that; that
B.what; that
C.that; what
D.what; what
两个网格物体之间在进行外形上的变形动画时,要求()和()完全相同。