跨度较大的梁模板下立柱支撑拆除的顺序是先拆两端后拆跨中。
参考答案：错
解析：先拆中间再两边。
My father______ Australia for a year. And he enjoys staying there.
A．has been in
B．has been to
C．has gone to
D．went to
功似龙骨而长于软坚散结的药物是（）
A.石决明
B.牡蛎
C.磁石
D.珍珠母
E.羚羊角
