《英语常用词疑难用法手册》所选择的材料和分析重点，就是英语一些最常用的单词和词组越是常用，问题就越多，研究的天地就越广阔，得出的结果也就越实用），着重探讨其中最应该引起注意（特别是最应该引起中国人注意）的内容，尤其是乍看起来有点“别扭”的内容。

The ideal book for people who want to increase their word power. Thorough coverage of 1,200 words and 240 roots while introducing 2,300 words. The Vocabulary Builder is organized by Greek and Latin roots for effective study with nearly 250 new words and roots. Includes quizzes after each root discussion to test progress. A great study aid for students preparing to take standardized tests.

Do your eyelids feel heavy during afternoon meetings? Do you sleep extra hours on weekend mornings? Do you use caffeine to stay alert? An alarm to get out of bed? These are all symptoms of sleep deficiency--signals that you are operating below your peak performance and beneath your mental capacity. Despite popular perceptions, sleep is not a luxury--it is a necessity. More than seventy million Americans are sleep-deprived, and make crucial business and personal decisions in an impaired state. In Power Sleep , Dr. James B. Maas, a pioneer of sleep research at Cornell University, has created an easy, drug-free program to improve your body and mind for an alert and productive tomorrow. In Power Sleep , you'll find: The golden rules of sleep Twenty great sleep strategies Dos and don'ts of sleeping pills and over-the-counter remedies How to combat travel fatigue, including jet lag and drowsy driving Tips for exhausted parents of newborns, infants, and toddlers How to overcome sleep disorders, including insomnia An important and practical book, Power Sleep will help you get the sleep you need to improve your mental and physical well-being quickly and dramatically and to become a peak performer.