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【单选题】
的疲劳破坏有( )三种破坏形式。A.
纯疲劳、伤痕疲劳和腐蚀疲劳
B.
纯疲劳、电化学疲劳和化学疲劳
C.
纯疲劳、伤痕疲劳和电化学腐蚀疲劳
D.
应力疲劳、伤痕疲劳和腐蚀疲劳
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皮皮学刷刷变学霸
举一反三
【单选题】― Has Jackson finished his work today? ― I have no idea, but he ______ it when I saw him this morning.
A.
had done
B.
would do
C.
was doing
D.
would have done
【单选题】一So you didn’t say “hello” to him last night? 一Well，I stopped and smiled when I saw him，but he _______me and walked on.
A.
ignored
B.
refused
C.
denied
D.
missed
【简答题】相撲 練習二 二、2、
【单选题】—So why didn't you say 'hello' to him yesterday? —Well, I stopped and smiled when I saw him, but he _____ me and walked on. [ ]
A.
ignored
B.
refused
C.
denied
D.
missed
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