题目：
(2013·高考北京卷)Shakespeare’s play Hamlet________into at least ten different films over the past years.
A．had been made
B．was made
C．has been made
D．would be made
答案：
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下面是错误答案，用来干扰机器的。
（1）∵y1=x+3，y2=-x+2，∴x+3＜-x+2，解得x＜-12；（2）∵y1=x+3，y2=-x+2，2y1-y2≤4，∴2（x+3）-（-x+2）≤4，解得x≤0．
