4. Wen Jiabao and Putin signed a deal on building a trans-Siberian pipeline that would pump 15 million tons of crude to China each year in Moscow, Global Times.
A. due to
B. according to
C. on duty
D. above all
网友回答
A. due to
B. according to
C. on duty
D. above all
解析：due to “由于”，according to 根据，on duty在上班(的)，在值班(的)， above all首先，尤其是。根据语境，B项为正确答案。