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更多“在line back体系中，所有物流相关工作被定义为非增值（…”相关的问题
What does the author mean when he says, "we can't turn the clock back"(Line 1, Para. 3)？
A．It's impossible to slow down the pace of change.
B．The social reality children are facing cannot be changed.
C．Lessons learned from the past should not be forgotten.
D．It's impossible to forget the past.
A.层层负责
B.人人有责
C.各负其责
A.用户
B.网络
C.硬件
D.软件
"That【23】a thief !" he thought, and he took his gun and shot【24】him. Then he went back to bed,【25】he was too frightened【26】of the house in the dark.
The next morning John went out and saw one【27】his white shirts hanging【28】the clothes line in the garden. His wife【29】washed it the day before and【30】it out to dry. Now it had a bullet hole right through the middle of it.
"My God," said John, "I was lucky last night. If I had been wearing that shirt, the bullet would have killed me!"
(46)
A．at
B．in
C．above
D．of
A.态势感知
B.WAF防火墙
C.DDoS基础防护
D.DDoS高防IP
