[题目]You will fail the exam you study harder than before.A. if B. and C. or D. unless 题目和参考答案——青夏教育精英家教网—

【题目】You will fail the exam _____ you study harder than before.

A. if B. and C. or D. unless

【答案】D

【解析】

试题分析：句意：---如果你不比以前更努力学习你将考试失败。本题考查unless 引导的条件状语从句，遵循主句用一般将来时从句用一般现在时。A. if 如果；B. and 和，又；C. Or要不然；D. unless 除非。结合语境，故选D。

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