What happened on the first day when the assembly line was tried in Ford's factory?
A.The workers spent 20 minutes on one assembly.
B.The workers saved more than 13 minutes for one assembly.
C.The workers spent 10 minutes on one assembly.
D.The workers saved more than 6 minutes for one assembly.

A.The
B.
B.The
C.
C.The
D.
D.The

【参考答案】

D
解析：这是一道考细节的题。第三段写道：“(试新方法的)前一天，工人平均花费20分钟完成整个过程，但是在(试新......

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