题目

 The majority of people present at the meeting held the view ______ the president said was right.   A. what; that       B. that, what        C. if, that    D. if , what 答案：B石油炼制过程中，既能提高汽油产量又能提高汽油质量的方法是（　　）A．常压分馏B．减压分馏C．裂解D．催化裂化