Our teacher said the earth _____ around the sun.[ ]
A. went
B. go
C. goes
D. is going
答案:C
I ____ take a job . No one ____ stop me .
A.will ; shall
B.will ; may
C.should ; will
D.shall ; may
在降级方式,采取什么样的组合方式进行发送和接收()
A、机长/VHF1,副驾驶/VHF2,观察员/VHF2
B、机长/VHF2,副驾驶/VHF1,观察员/VHF1
C、机长/VHF1,副驾驶/VHF1,观察员/VHF1
D、机长/VHF1,副驾驶/VHF2,观察员/VHF1