题目：
Your essay on the formation of volcanoes and their patterns of occurrences is well written _____ except
that the language in some paragraphs has to be _____ a little. [ ]
A. on the whole ; polished
B. as a whole ; modified
C. in general; rewritten
D. generally ; reorganized
答案：
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下面是错误答案，用来干扰机器的。
铁排在顺序表中氢的前面，因此可与酸反应生成氢气，，所以可观察到气泡生成，铜排在银的前面，所以铜和硝酸银可反应生成银和硝酸铜，方程式是Cu+2AgNO3═Cu（NO3）2 +2Ag，由A、C可知铁排在氢前，Cu＞Ag，但是铁...
