打七折后的售价=70%a元.
故选C.
—What were you doing at this time yesterday?
—I _____ basketball with my friends. [ ]
A. was playing
B. had played
C. have played
D. played
未取得建设工程规划许可证或者未按照建设工程规划许可证的规定进行建设的,尚可采取改正措施消除对规划实施的影响的,限期改正,处( )的罚款。
A.建设工程造价2%以上5%以下 B.建设工程造价3%以上7%以下C.建设工程造价4%以上8%以下 D.建设工程造价5%以上10%以下