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【单选题】
在交变应力循环作用下抵抗断裂的能力是钢的A.
强度和塑性
B.
韧性
C.
硬度
D.
疲劳强度
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举一反三
【单选题】听力原文： It may seem strange to date the emergence of a global economy in 1973, since that was the year of the first oil shock. The price of a barrel of oil was raised dramatically, leading to a slump in...
A.
The drop in economies of industrialized nations caused by the rise of oil price.
B.
The cease of the United States' dominant position in the world economy.
C.
The competition from Western Europe and Japan to the U. S. in international trade.
D.
All of the above.
【单选题】，it’s true.
A.
Strange as it may seem
B.
As it may seem strange
C.
Seem strange as it may
D.
It as may seem strange
【单选题】____ seems strange to us is ______ she can sing so many English songs beautifully.
A.
It; that
B.
That; how
C.
It; Why
D.
What; that
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