可以引起自燃的物质是（）。
A、黄磷
B、二硫化碳
C、麦秆
D、石油
参考答案：D
In 2001 the Chinese people were always in high spirits, for pieces of exciting news came to China
________.[ ]
A. step by step
B. one by one
C. little by little
D. one after another
()城市可以在总体规划基础上，编制分区规划。
A．所有
B．特大
C．大、中等
D．中小
