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【简答题】
Combine the following pairs of sentences into one sentence by changing the second sentence into an attributive clause. 1. The fan is on the desk. You want it.
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反馈参考答案：
举一反三
【多选题】What mistakes did Dalong and Xiaoli make when exchanging business cards?
A.
They sat on the chairs.
B.
They had no eye contact.
C.
The reading side faced Xiaoli.
D.
Dalong put Xiaoli's card in his back pocket.
E.
They are talking each other.
【单选题】王二小带着100元钱去超市购买x和y两种商品,已知x商品的单价是20元,y商品的单价是10元,王小二要让自己达到效用最大化,以下消费组合哪些是可能的( )
A.
购买4个单位的x商品和2个单位的y商品
B.
购买3个单位的x商品和3个单位的y商品
C.
购买2个单位的x商品和4个单位的y商品
D.
全部购买6个单位的x商品
【简答题】简述Activity生命周期的四种状态,以及状态之间的变换关系。
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