销售利润率只和边际贡献率有关,它不受安全边际率的影响()
参考答案:错
Can you pass my glasses to me, Jerry? I can _____ see the words on the blackboard.[ ]
A. hardly
B. really
C. simply
D. clearly
Mr. Smith __________ the accident,but his wife died and he __________ her by five years.
A.survived from;survived
B.survived of;lived
C.survived;survived
D.survived;lived