题目内容

Britain was the first country to start the Industrial Revolution which contributed to the establishment of the British Empire.

A. 对
B. 错

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The Second Industrial Revolution turned Britain into the “workshop of the world”.

A. 对
B. 错

The Third Industrial Revolution took place after World War Ⅰ.

A. 对
B. 错

元组 t=(1,(2,3),(4,[5,6,7,])) 的元素个数（即 len(t)）为（）

A. 7
B. 4
C. 3
D. 6

max(（1，2，3)*2）的值是：_____________