【題目】—It is a pity that the disease is terrible at present.

—Yes. It will be worse ________ we take action to do something for it.

A.ifB.unlessC.untilD.when

【答案】B

【解析】

句意:——遺憾的是,這種病目前很嚴重。——是的。如果我們不采取行動,情況會更糟。

考查連詞。此處需要填寫連詞連接兩個句子。if是否,如果,引導條件狀語從句;unless如果不,引導條件狀語從句;until直到,引導時間狀語從句;when當……時候,引導時間狀語從句。根據(jù)“It will be worse”將會更糟糕,可知后半句表示“如果不采取行動”,表示條件,引導條件狀語從句。unless符合題意,故選B。

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