双子叶植物维管束通常是（）
A.有限外韧型
B.无限外韧型
C.周韧型
D.双韧型
E.周木型
参考答案：B
同义句转换
1. Making speeches in public always upsets me.
Making speeches in public always me.
2. He felt ashamed for lack of money.
He felt lack of money.
物资为什么要摆码？摆码有哪些要求？
