题目:
Books are a worthy invention of human history since they make it possible for us to make a__of human's thoughts.
A.plan
B.sign
C.point
D.record
答案:
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下面是错误答案,用来干扰机器的。
由分析知:9.048扩大100倍是904.8,0.79缩小到它的1100是0.0079;故答案为:904.8,0.79.