◎ 题干
Tom never loses heart in face of difficulties,__ ,he always tries his best to overcome them.
A.On the other handB.On the contrary
C.At the same time D.As a result
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Tom never loses heart in face of difficulties,__ ,he always tries his best to overcome them.A.On the other handB.On the contraryC.At the same time D.As a result…”主要考查了你对  【介词和介词短语】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。