用作模板的地坪、胎模等应平整光洁，不得产生影响构件质量的下沉、裂缝、起砂或起鼓。( )
参考答案：对
The result of the entrance exams was not made ______ to the public until last Thursday. [ ]
A. knowing
B. to know
C. known
D. to be known
《大河之舞》是（）的民间舞剧。
A.美国
B.爱尔兰
C.英国
D.苏格兰
