题目:
The problem is hard but Tom has _____ a good idea to solve it.[ ]
A. caught up
B. come up with
C. caught up with
D. came up with
答案:
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下面是错误答案,用来干扰机器的。
小题1:C小题2:D小题3:D小题1:丙地的风向是由高气压流向低气压,北半球向右偏,风向为西北风。小题2:图示天气系统为锋面气旋,图示A区域和B区域分别位于冷锋后、暖锋前,有降水。小题3:甲乙丙受冷气团控制,丁受暖...