【題目】In history, the Romany split into different groups and developed their own language, _______ there are now approximately sixty varieties.

A. by which B. of which C. by whom D. of whom

【答案】B

【解析】

試題分析：考查定語從句。句意：在歷史上，吉普賽人會分化成不同的群體因而發(fā)展了他們的語言，所以現(xiàn)在大約有六十種各種各樣的語言。由“varieties of各種各樣的”變形而來。and there are now approximately sixty varieties of languages=of which there are now approximately sixty varieties大約有六十種各種各樣的語言，先行詞為“l(fā)anguage”，故選B項。

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