【題目】Or students, preparing for Gaokao is a difficult but _____ challenge that will shape their future.

A.controversialB.arbitraryC.tentativeD.worthwhile

【答案】D

【解析】

考查形容詞的詞義辨析。句意：對于學生來說，準備高考是一個困難但值得的挑戰(zhàn)，它將決定他們的未來。A．controversial有爭議的；B．arbitrary任意的；C．tentative試探性的；D．worthwhile有價值的。but表轉(zhuǎn)折，所填詞匯應與difficult的感情色彩相反，結(jié)合句意，高考決定學生的未來，準備高考雖然困難，但卻是一個值得的挑戰(zhàn)。故選D項。

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