望春花的花蕾特征是（）

A.花被片9，类棕色，外轮花被片3，条形，约为内两轮长的1/4

B.花被片15，外轮花被片3，条形，约为内四轮长的2倍

C.花被片9，内外轮同型

D.花被片10～12（15），内外轮无显著差异

E.花被片9，外轮为内轮的1/2大

Millie is _______clever a girl that she has worked out_______ difficult math problems.

A．so; so

B．such; such

C．so; such

D．such; so