4231
根据第二句Cao Cao wants to know its weight(曹操想知道它的重量),可知,第四幅图排序为1。
根据第三、四行First,they let the elephant onto a boat,and the water comes up.Next,Cao Chong marks(标记)the water line.(首先,他们把大象放到船上,水就上来了。接下来,曹冲标出水线。)可知,第二幅图排序为2。
根据第四至六行Then,the elephant comes back to the bank,and people put heavy stones in the boat to let the water comes up to the water line.(然后,大象回到岸边,人们把沉重的石头放在船上,让水涨到水线。 )可知,第三幅图排序为3。
根据第六行At last,people weighs each of the stones.(最后,人们给每块石头称重。)可知,第一幅图排序为4。