短文改错。下面短文中有8处语法错误。请在有错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号（∧）,并在其下面写上该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改8处，多者（从9处起）不计分。
Last weekend we went mountain-climbing. Even the heavy rain in the morning could not prevent us go.
Setting off very early, we went along an extreme narrow road, all in high spirit. On each side of the road
were green fields and some farm houses. We could hear the sound of the rain and our footsteps mixing with
our laughter. At noon we reached the top of the mountain. That surprised us most there was the beauty of
scenes. After having a short rest there and sharing with the food we had brought, we started going down.
It rained even harder. We were wet to the skin, and we still sang and laughed happily.
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Last weekend we went mountain-climbing. Even the heavy rain in the morning could not prevent us
go. Setting off very early, we went along an extreme narrow road, all in high spirit. On each side of the
1. going 2. extremely 3. spirits
road were green fields and some farm houses. We could hear the sound of the rain and our footsteps
mixing withour laughter. At noon we reached the top of the mountain. That surprised us most there was
4. mixed 5. What
the beauty of∧scenes. After having a short rest there and sharing with the food we had brought, we started
6. the 7. 去掉with
going down. It rained even harder. We were wet to the skin, and we still sang and laughed happily.
8. but
(式中：A：年总收入，C：年总支出，r：土地还原利率，n：收益年期)。