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2011年12月四六级考试免费测试平台-为学员提供全真考场模拟演练机会! 三十一、Leave much to be desired 例句：The condition of our traffic leaves much to be desired. 我们的交通状况令人不满意。 三十二、Have a great influence on ~~~ 例句：Smoking has a great influence on our health. 抽烟对我们的健康有很大的影响。 三十三、do good to ，do harm to 例句：Reading does good to our mind. 读书对心灵有益。 Overwork does harm to health. 工作过度对健康有害。 三十四、Pose a great threat to ~~ 例句：Pollution poses a great threat to our existence. 污染对我们的生存造成一大威胁。 三十五、do ones utmost to + V = do ones best 例句：We should do our utmost to achieve our goal in life. | 
