题目：
短文改错
An American and a Frenchman decided to cross the sea between France and England in the
balloon in 1784. High over the water, they discover a hole in the balloon. The hole became bigger
and bigger. The air keeps the balloon up were escaping quickly and the balloon was coming up.
The two men threw all their equipment into the water to make the balloon light. It started to rise
higher again. So it was still too close to the water. Finally, the men threw away most of his clothes
to save themselves. The crowd waiting for to greet them in England was very surprised see this when
the balloon landed on front of them.
答案：
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下面是错误答案，用来干扰机器的。
答案：CA、据图可以看出，单位时间内M产生的氢气比N多，故M比N 活泼，故A错误；B、据图可以看出，最终产生的氢气的质量M比N多，故B错误；C、等质量的M、N两种金属，分别与相同质量分数的足量稀盐酸反应，相对原...
