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【单选题】
爱国主义是以爱故土、( )、爱国家为基本要求的具体行为模式和意志倾向。A.
爱民族
B.
爱历史
C.
爱人民
D.
爱文化
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皮皮学刷刷变学霸
举一反三
【简答题】Engineers had a better choice of material, ______________ (当新发明被投入使用以后).
【单选题】After synthetic ____, engineers had a better choice of material.
A.
created
B.
has created
C.
has been created
D.
had been created
【单选题】After synthetic ____, engineers had a better choice of material.
A.
created
B.
has created
C.
has been created
D.
had been created
【单选题】Mr. H never gets beyond corporal and material ________.
A.
verities
B.
value
C.
profit
D.
benefit
【单选题】If a better material______, the cost of the product would have been decreased.
A.
had been used
B.
had been using
C.
being used
D.
using
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