【正确答案】The four maxims of Cooperative Principle are: QUANTITY, QUALITY, RELATION, and MANNER.
(1)A asks whether B has seen his/her watch. Therefore B obviously violates the maxim of QUANTITY: make your contribution as informative as is required (for the current purposes of the exchange). The implicature: Yes, I have seen your watch and you will find it in the drawer.
(2)A says Reno is the capital of Nevada. This statement is wrong. Reno is just a city of western Nevada, the capital of which is Carson City. While B say yeah but makes another statement by saying London is the capital of New Jersey, which everyone knows is wrong. This violates the maxim of QUALITY: try to make your contribution one that is true, and do not say what you believe to be false. The implicature here is that your statement is so obviously wrong.
(3)In this conversation, A says he likes the dinner while B says he is a vegetarian even though no one asks him whether he is one. This violates the maxim of RELEVANCE: be relevant. The implicature: 1 did not like that dinner as you.
(4)In this conversation, B is being deliberately obscure, and this violates the maxim of MANNER: avoid obscurity of expression. The implicature: I am spelling out the name of McDonalds so that the children will not be able to understand what we are talking about.

【答案解析】[解析] 此题考查的是格莱斯言语交际理论中的合作原则。合作原则下有四个准则：数量准则、质量准则、关系准则和方式准则。考生应掌握这四条准则的含义以及准则的违反，并且可以用它们来分析会话含义。