第25题: [单项选择]In keeping mind active ,the chief danger facing us is ______. A. mental problems B. lack of enthusiasm in learning C. bad habits in eating and drinking D. ignorance of the time slipping by 参考答案:B 答案解析:语义归纳题 问的是“要保持思想活跃,我们面临的主要危险是什么”。答题点在第四段第三、四句,主要危险是“laziness,sloth,routine,stupidity(懒惰、懈怠、墨守成规、麻木不仁