设置在房屋中间部位的圈梁抵抗不均匀沉降的作用最显著。 ( )
参考答案：对
I was afraid Mr. Lu would not accept my advice at the beginning. _______, he was quite pleased with it.
A．As a matter
B．As the matter of fact
C．As a fact
D． As a matter of fact
根据我国《合同法》，与限制行为能力人订立的合同属于（）。
A.有效合同
B.无效合同
C.可撤销合同
D.效力待定合同
