Official 51 Lec 2
Question 2 of 6
What does the professor imply about the record-keeping methods used by early Western Europeans?

A.

They led directly to advances in basic engineering.

B.

They required an understanding of elementary algebra.

C.

They did not require a counting system that included the number zero.

D.

They were more sophisticated than those used in the Middle East.

正确答案:C

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