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三班的一次联欢活动有学生没有参加，何捷、小珍中有一人没有参加，其他三人都参加了。老师在询问时，他们做了如下的回答。 何捷：小马没来。 小马：我不但参加了，而且还表演了节目。 丹丹：我晚来了一会儿，但一直到晚会结束才走。 小珍：如果丹丹来了，那就是我没来。 如果他们中只有一个人说了谎，则以下哪项成立
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一个医生在进行健康检查时，如果检查得足够彻底，就会使那些本没有疾病的被检查者无谓地饱经折腾，并白白地支付了昂贵的检查费用；如果检查得不够彻底，又可能错过一些严重的疾病，给病人一种虚假的安全感而延误治疗。问题在于，一个医生往往很难确定该把一个检查进行到何种程度。因此，对普通人来说，没有感觉不适就去接受医疗检查是不明智的。 以下各项如果为真，都能削弱上述论证，除了
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全国运动会举行女子5000米比赛，辽宁、山东、河北各派了三名运动员参加。比赛前，四名体育爱好者在一起预测比赛结果。甲说：“辽宁队训练就是有一套，这次的前三名非他们莫属。”乙说：“今年与去年可不同了，金、银、铜牌辽宁队顶多拿一个。”丙说：“据我估计，山东队或者河北队会拿牌的。”丁说：“第一名如果不是辽宁队的，就该是山东队的了。”比赛结束后，发现以上四人只有一人言中。 以下哪项，最可能是该项比赛的结果
Cafes in FranceCafes are very much a part of the French way of life and are frequented as a meeting point among friends. Most cafes are primarily focused (29) drinks but provide lunchtime snacks (30) as sandwiches, salads and toast. All kinds of drinks are served, (31) alcoholic drinks and hot beverages.Generally customers (32) consume only a small mount of food and drink (33) visit and there are high taxes on alcohol served in public bars. Consequently, the price of drinks is generally high (34) with other European countries. (35) cafes increasingly have to compare with fast food outlets, (36) are used as meeting places by young people attracted by their low prices.In France, cafes and bars are mainly independent family-nm businesses, (37) 70% of them employing between one (38) five people. The number of cafes and bars in France has steadily diminished (39) the past few years, although most closures were limited (40) rural areas.
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