The road _____last year. [ ]
A. builds
B. built
C. was built
D. is built
答案：C
侧沟和中心水沟的连接，应符合哪些规定？
以下上海黄金交易所挂盘合约中，每手合约重量最小的是（）
A.Au99.99
B.Au99.95
C.Pt99.95
D.Au（T+D.
