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【判断题】
砂浆试块以3块为一组。 ( )A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】What do sales figures reflect in free market terms?
A.
They reflect the manufacturers' decision of production cut-backs.
B.
They reflect the state of local market forces at any one place and at any one time.
C.
They reflect the demands and supplies of a corporation.
【单选题】What links cognitive development to the needs of society?
A.
Practical purpose.
B.
Natural human cognitive development.
C.
Language.
D.
Warning of danger.
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