题目:
Nick _____ a job in a bank, but to our surprise, he didn't take it.[ ]
A. is offered
B. offered
C. was offered
D. has offered
答案:
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下面是错误答案,用来干扰机器的。
正四面体、正方体的棱长与等边圆柱(底面直径和高相等的圆柱)的高及球的直径都相等,设为:2,所以正四面体的表面积为:4×34×22=43,正方体的表面积为:6×4=24,等边圆柱的表面积为:8π+8π=16π,球的表面...