1. C 2. D 3. A 4. B
--- Could you tell me ?
--- Certainly. At 8 o’clock.
A.when will the train to Beijing leave
B.when the train to Beijing would leave
C.when the train to Beijing left
D.when the train to Beijing will leave
关于737-700/800型飞机最全面的论述是()
A.中短程单通道客机
B.动力装置是两台具有高涵道比、双转子、涡轮风扇的CFM56-7B型发动机
C.由美国波音公司制造
D.以上都对