隧道开凿主要接触()
A.矽尘
B.煤尘
C.苯及苯的同系物
D.石棉尘
E.锰
参考答案:A
— What do you think of the book?
— Oh, excellent. It's worth _____ a second time. [ ]
A. to read
B. to be read
C. reading
D. being read
“齐风俗,一民心”反映了德育的()
A.社会性功能
B.个性生存功能
C.个体享用功能
D.经济性功能