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【简答题】
试述韧性断裂与脆性断裂的区别,为什么说脆性断裂最危险?
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皮皮学刷刷变学霸
举一反三
【简答题】A failed marriage means there are others just like you needing to be ______ (love).
【单选题】(2013·南京金陵中学模拟)I failed again，but my parents encouraged me and told me that failure________the mother of success.
A.
was
B.
is
C.
be
D.
been
【单选题】_________ to me, John would not have failed.
A.
If he has listened to me
B.
Had he listened
C.
If he listened to me
D.
Should he have listened