改错：We know good knowledge of science is very important for a student who wants to do scientific

改错：We know good knowledge of science is very important for a student who wants to do scientific

题目

改错：We know good knowledge of science is very important for a student who wants to do scientific
（连着上面的）research.

答案

We know 【a good knowledge】 of science is very important for a student who wants to do scientific research.
【a good knowledge of+n】
前面要加不定冠词的

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