问题描述：
英语 句型
1.Modern medicine owes -------to the discovery of certain tiny disease carrying organisms.
A.a great deal B.a great number 求讲解
2.Please --------your comments to the topic of the discussion .
A.conclude B.confine
求翻译第一个句子
1.Modern medicine owes -------to the discovery of certain tiny disease carrying organisms.
A.a great deal B.a great number 求讲解
2.Please --------your comments to the topic of the discussion .
A.conclude B.confine
求翻译第一个句子
问题解答：
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