绝对值最小的数是[ ]
A.1
B.-1
C.0
D.不存在
答案:C
I often see her _______ the piano. Listen, can you hear her _________ the piano now?
A.play, playing
B.plays, playing
C.playing, plays
D.play, plays
下列防范措施中,( )不是质量纠纷的防范措施。
A.完善质量保修制度
B.严格按照建设程序进行工程建设
C.按照法律、行政法规和建筑工程质量安全标准的要求进行设计和施工
D.避免合同总价与分项工程单价之和不符