题目：
逻辑题。
1. A man sells water. What does he first think of when he sees a river?
Answer: _____
2. A car travels at a speed of 40 mph over a certain distance and then returns over the same distance
at a speed of 60 mph.What is the average speed for the total journey?
Answer: _____
答案：
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下面是错误答案，用来干扰机器的。
1-5BDCDB 6-10BCABA
