_____ from other continents for millions of year, Australia has many plants and animals not found in any other country in the world.

A. Being separated B. Having been separated

C. Having separated D. To be separated

 

B

【解析】

試題分析：非謂語動詞用法的考查；通過分析句子結(jié)構(gòu)，這里需要用現(xiàn)在分詞作原因狀語，現(xiàn)在分詞的動作發(fā)生在謂語動作之前，故用現(xiàn)在分詞的完成時；并且現(xiàn)在分詞的邏輯主語“Australia”與分詞動作“separate”之間是被動關(guān)系，故用現(xiàn)在分詞的完成時的被動式,故選B項。

考點：非謂語動詞用法的考查

 

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