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【单选题】
下列材料中,不属于各向同性材料的有A.
钢材
B.
塑料
C.
浇铸l很好的混凝土
D.
松木
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【简答题】Nobody believed his reason for being absent from class__________he had to meet his uncle at the airport. A．why B．that C．where D．because
【单选题】Nobody believed his reason for his being absent from class ___ he had to meet his uncle at the airport. [ ]
A.
why
B.
that
C.
where
D.
because
【简答题】青霉素有哪些主要的优、缺点?
【单选题】Nobody believed his reason for being absent for
A.
33.Nobody believed his reason for being absent formthe class he had to meet his uncle at the air port. （重庆） A.why
B.
that
C.
where
D.
because
【简答题】戴维毕业于加拿大的英属哥伦比亚大学,主修英语运用语言学,研究方向第二语言学习策略 Mr. David has graduated from the University of British Columbia ,___________applied linguistic and does research on learning strategies of second language.
【单选题】Nobody believed his reason for being absent from the class ______ he had to meet his uncle at th
A.
31. Nobody believed his reason for being absent from the class ______ he had to meet his uncle at the airport. A．why
B.
that
C.
where
D.
Because
【简答题】分组交换的主要优、缺点是什么
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