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读下面四幅图片回答问题：

（1）图中分别代表的少数民族是：A______族   B______族   C______族   D______族

（2）“天苍苍，野茫茫，风吹草低见牛羊．”是对图______（填字母）中______民族聚居环境的描述．

（3）D图的舞蹈是______．

答案

（1）根据服饰及动作可知A为维吾尔族手鼓舞，B为蒙古族摔跤，C为朝鲜族跳板，D为傣族孔雀舞．

（2）诗句中有草和牛羊，结合图可发现是蒙古族所生活的环境；

（3）从人物的服饰上可断定这是孔雀舞，是傣族的特色，傣族生活的地理环境应该是热带地区；

故答案为：（1）维吾尔；蒙古；朝鲜；傣；

（2）B； 蒙古

（3）孔雀舞．

单项选择题 B型题

从1990~2000年，用某筛检试验方法对某病进行筛检。在这段时间该病的患病率增加了一倍，试问这种筛检试验方法的（）因受到患病率的影响而发生相应的改变

A.灵敏度

B.特异度

C.阳性预测值

D.阴性预测值

E.一致率
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单项选择题

Sports Commentary　　One of the most interesting and distinctive of all uses of language is commentary. An oral reporting of ongoing activity, commentary is used in such public arenas as political ceremonies, parades, funerals, fashion shows and cooking demonstrations. The most frequently occurring type of commentary may be that connected with sports and games. In sports there are two kinds of commentary, and both are often used for the same sporting event. “play-by-play” commentary narrates the sports event, while “color –adding” or “color” commentary provides the audience with pre-event background, during-event interpretation, and post-event evaluation. Color commentary is usually conversational in style and can be a dialogue with two or more commentators.　　Play-by-play commentary is of interest to linguists because it is unlike other kinds of narrative, which are typically reported in past tense. Play-by-play commentary is reported in present tense. Some examples are “he takes the lead by four” and “she’s in position.” One linguist characterizes radio play-by-play commentary as “a monologue directed at an unknown, unseen mass audience who voluntarily choose to listen…and provide no feedback to the speaker.” It is these characteristics that make this kind of commentary unlike any other type of speech situation.　　The chief feature of play-by-play commentary is a highly formulaic style of presentation. There is distinctive grammar not only in the use of the present tense but also in the omission of certain elements of sentence structure. For example “Smith in close” eliminates the verb, as some newspaper headlines do. Another example is inverted word order, as in “over at third is Johnson.” Play-by-play commentary is very fluent, keeping up with the pace of the action. The rate is steady and there is little silence. The structure of the commentary is cyclical, reflecting the way most games consist of recurring sequences of short activities---as in tennis and baseball---or a limited number of activity options---as in the various kinds of football. In racing, the structure is even simpler, with the commentator informing the listener of the varying order of the competitors in a “state of play” summary, which is crucial for listeners or viewers who have just tuned in.

It can be inferred from the passage that the author most likely agrees with which of the following statements about sports commentary

A．Color commentary is more important than play-by-play commentary

B．Sports commentators do not need special knowledge of the sport.

C．Commentary enhances the excitement and enjoyment of sports.

D．Sports commentators should work hard to improve their grammar.
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