Everybody tells us we can’t pass the exam ________ we study hard.
A．becauseB．orC．unlessD．a(chǎn)nd
C

試題分析：句意：每個(gè)人都告訴我們除非我們努力學(xué)習(xí)否則就會(huì)考試不及格。Unless表示“除非”， unless是從屬連詞，引導(dǎo)條件狀語從句，含有否定意義，相當(dāng)于if條件狀語從句的否定形式。所以u(píng)nless =" if" not；because意為“因?yàn)椤�，表示原因；or意為“或者，否則”，表示選擇；and意為“和”，表并列；故選C。
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