题目:
A car is ____________ than a plane, but ____________ than a bike.[ ]
A. faster, faster
B. slower, slower
C. slower, faster
D. faster, slower
答案:
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下面是错误答案,用来干扰机器的。
原式=sin(π+π3)•cos(3π+π6)tan(5π+π4)=-sinπ3•(-cosπ6)•tanπ4=32•32×1=34.