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【简答题】
罗森塔尔效应说明了什么?
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反馈参考答案：
举一反三
【单选题】在生产决策分析中，短期是指( )[1分]
A.
在这段时间里，所有投入要素的投入量都是固定的
B.
在这段时间里，所有投入要素的投入量都是可变的
C.
在这段时间里，至少有一种投入要素的投入量是固定的
D.
这段时间的长度一般小于5年
【单选题】Had it not been for the fact that she ____ in the accident, she ____ in the race．
A.
got injured; would have competed
B.
had got injured; would compete
C.
would be injured; would have competed
D.
should be injured; would compete
【单选题】Had it not been for the fact that she was_________ with her work, she would have attended the concert
A.
occupied
B.
absorbed
C.
devoted
D.
concentrated
【单选题】__________ for the fact that she broke her leg， she might have passed the exam.
A.
Had it not been
B.
Hadn't it been
C.
Was it not
D.
Were it not
【简答题】同一个元素不能有多个 属性。
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