施工安全的责任主体是（）。
A．业主方
B．工程监理方
C．工程总承包方
D．施工承包方
参考答案：D
Most of the artists _______ to the party were from South Africa.
A．invited
B．to invite
C．being invited
D．had been invited
黏液脓血便可见于（）。
A.菌痢
B.痔
C.直肠癌
D.溃疡性结肠炎
E.状结肠癌
