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

枸橼酸盐经过三羧酸循环后的产物是（）。

A.碳酸氢钠

B.乳酸钠

C.磷酸钠

D.谷氨酸钠

E.精氨酸钠