题目内容
OSI是一个开放性的系统互联参考模型，它是一个定义非常好的协议规范。OSI模型有七层结构。在TCP／IP的主机一网络层对应OSI模型的()。
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在航空运输中，贵重货物只能使用挂签，不能使用贴签。()
A．Mary didn't pay the rent on time.B．She couldn't find anyone to repair the dishwasher
The 【C10】______ of this music are as interesting as the music 【C11】______ . American Negroes, or blacks, as they are called today, were the jazz 【C12】______ . They were brought to the Southern states 【C13】______ slaves. They were sold to plantation owners and forced to work long 【C14】______ . When a Negro died his friends and relatives 【C15】______ a procession to carry the body to the cemetery. In New Orleans, a band often accompanied the 【C16】______ . On the way to the cemetery the band played slow, solemn music suited to the occasion.
【C17】______ on the way home the mood changed. Spirit lifted. Death had removed one of their 【C18】______ , but the living were glad to be alive. The band played【C19】______ music, improvising on both the harmony and the melody of the tunes 【C20】______ at the funeral. This music made everyone want to dance. It was an early form. of jazz.
【C1】
听力原文： In general, American food is mild tasting; most Americans do not season their food to any great degree. Salads are very popular and are served all year, but especially in the summer. Waiters tend to assume that everyone drinks coffee, but simply tell them if you wish something else. If a waiter says "Now or later？" he means "Do you want coffee with your meal or after it？" Many, but certainly not all, Americans drink coffee or tea with their meals. Either way is perfectly acceptable. When dining out, you can ask for tea, milk, "coke", wine or beer if you prefer. Restaurants can only serve beer, wine, or other alcoholic drinks if they have a license, that is, permission from the local government to serve alcoholic drinks. Normally, when eating in a private home, it is considered better manners to take whatever is being served and not to ask for something different, unless the hostess gives you a choice.
The main course served in American meals is usually meat, fish, or poultry, but rarely is more than one of these served at the same meal. Seafood is sometimes served as a first course, however.
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