[解析]
(1)C.细节理解题。根据第一段but deploying (有效利用)it in every situation without mastery of its use is dangerous,says a new social science study.(在任何情况下,如果不掌握它的使用,它都是危险的。)所以A选项:在任何情况下,微笑都是非常危险的。的说法是错误的;根据第二段Subtle differences in a smile can definitely have a real impact on whether people trust each other and choose to cooperate.In fact,the way you smile in a good or bad situation can impact whether people trust you.(微笑中的细微差别肯定会对人们是否信任彼此并选择合作产生真正的影响。事实上,你在好的或坏的情况下的微笑方式会影响人们是否信任你。)所以B.微笑的细微差别几乎没有影响。的说法是错误的;C选项:你微笑的方式会影响你是否值得信任。是正确的;根据第二段Smiling at another person does not always lead to trust and cooperation(对别人微笑并不总能带来信任与合作。)D.微笑总能带来信任与合作。的说法是错误的。故选C。
(2)B.细节理解题。根据第三段"Think about movie villains(恶棍),for example in James Bond films," ("想想电影中的反派吧,例如在詹姆斯•邦德的电影中,")这是举例子和后文The findings of this study show the power of subtle facial expressions and the positive consequences that an affiliation smile can have in difficult situations.It also highlights the importance of social context﹣a happy smile that could be read as a signal of trustworthiness in one setting can,but in another setting,it can be seen as the evidence of bad intentions."(这项研究的结果显示了微妙面部表情的力量,以及在困难的情况下,亲密的微笑可能带来的积极后果。它还强调了社会环境的重要性﹣﹣﹣一个快乐的微笑在一种情况下可以被解读为值得信任的信号,但在另一种情况下,它可以被视为恶意的证据。)引用了科学研究的内容,所以作者通过举例和引用科学证据解释微笑中的细微差别。故选B。
(3)C.推理判断题。根据最后一段Mastery of the smile then,can be an excellent way of getting out of difficult social situations,while the lack thereof can be an excellent way of getting into one.(因此,掌握微笑可能是摆脱困难社会处境的一个很好的方法,而缺乏微笑可能是进入困难社会处境的一个很好的方法。)可见掌握微笑可以帮助你避免麻烦。故选C。
(4)D.标题归纳题。本文主要介绍了微笑的细微差别所带来的不同影响,握微笑可以帮助你避免麻烦。A.The advantages of smiling微笑的好处;B.The impact of smiling微笑的影响;C.A trusting smile信任的微笑;D.Subtle differences in smiling微笑的细微差别。故选D。