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Materials and Tools for Language Learning ① The range of materials and tools available to help you with your language studies is huge, from dictionaries to language courses. All of them can help you in different ways, and the appropriate use of these materials and courses will make your language learning much easier and more effective. ② Possibly the most useful tools there are for learning a language are dictionaries. Dictionaries come in a number of formats including bilingual, monolingual, illustrated, electronic and online. Bilingual dictionaries are perhaps the most useful ones for beginners and intermediate learners, while monolingual dictionaries, which are designed for native speakers, are also useful for advanced learners. Pocket dictionaries are good for quick reference and easy to carry around. Larger dictionaries are better if you want more definitions, examples of usage, and information about pronunciation, and grammar. Electronic dictionaries are available as handheld units, or as software. Handheld ones are portable, easy and quick to search, and often provide other functions, such as, text-to-speech, voice recognition and speech synthesis organizers, address books. They tend to be rather expensive though. Software dictionaries offer many of the same functions, and can be used on computers, and mobile phones. ③ The traditional courses tend to consist of textbooks containing dialogues, exercises, notes on grammar, and maybe cultural information. Accompanying cassettes, CDs and/or mp3s are often available. Most such courses are intended for complete beginners or people with only minimal knowledge of the language. Intermediate and advanced-level courses are available for some of the popular languages, such as French, German, Italian and Spanish. ④ Audio courses usually consist solely of cassettes or CDs, though some may also include a limited amount of printed material. All dialogues, exercises, instructions and explanations are recorded and the focus of these courses is teaching you to understand and speak the languages. They are very good at teaching you authentic pronunciation and a manageable amount of vocabulary. ⑤ Various computer-aided courses are available on CD-ROMs and DVDs. Each course is different but they generally include dialogues, audio, exercises and tests. Some also include phrasebooks, dictionaries, videos, games and provide online and/or telephone support. With audio courses, you can learn（）
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中风，邪入于腑，临床可见下列何种症候（）
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传统的冯·诺依曼计算机采用串行顺序处理的工作机制，是()。
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采用划线更正法更正错误的数字时，正确的做法是（）。
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关于环境责任原则的论述正确的是( ) A．环境责任原则是“谁污染谁承担责任”、 “谁开发谁保护”、 “谁破坏谁恢复”、 “谁利用谁补偿”、 “谁主管谁负责”、 “谁承担谁负责”、 “环境保护由党政一把手亲自抓、负总责”等原则的概括 B．明确了政府和污染源单位的不同责任 C．目前，环境责任原则已经从污染者、破坏者、主管者的责任扩大到相关人员的合作责任、协作责任，从而形成了共同责任 D．环境责任与环境利益的公平以及利益增进
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某公司与英国一家公司以CFRlanded条件成交了一笔生意，按国际惯例，这批货物在目的港的缺货费用，驳船费用应由（）承担。
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路堤过渡段填筑时，对于大型压实机械压不到的部位，应用小型振动压实设备进行碾压，其填料的松铺厚度不宜大于()cm。
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学习性组织
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城市轨道交通信号中，红色表示停车，禁止越过信号机。绿色表示可按规定速度通过。如果信号机显示不明或失去表示，我们将视为显示（）色。
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女，28岁。因业务关系经常需在酒店宴请客户和饮酒，近期拟考虑生育。从妇幼保健角度，你认为最应补充的维生素是（）