【題目】There are fewer and fewer tigers in India. There will be no tigers left________ humans stop hunting them for their fur and bones.

A.unlessB.ifC.becauseD.since

【答案】A

【解析】

句意：印度虎越來越少了，這種情況會持續(xù)下去，除非人類停止為了虎皮和虎骨的獵殺。

A. unless除非，B. if如果，C. because因?yàn)椋?/span>D. since自從。本題考查的是從屬連詞的辨析。根據(jù)題意，從前半句“這周情況會持續(xù)下去”和后半句“人類停止因?yàn)榛⑵ず突⒐堑墨C殺”來看，這里需要一個表假設(shè)的連詞，故選C。

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