Premier Wen delivered a speech at the 5th Session of the 11th National People's Congress, _________

that the government will continue improving the balance between urban and rural development.[ ]

A. to state              

B. stating            

C. having stated        

D. stated

以下关于队列的叙述中哪一条是不正确的？

A．队列的特点是先进先出

B．队列既能用顺序方式存储，也能用链接方式存储

C．队列适用于二叉树对称序周游算法的实现

D．队列适用于树的层次次序周游算法的实现