【正确答案】Orice's Maxim of Quantity is: 1. Make your contribution as informative as is required (for the current purposes of the exchange). 2. Do not make your contribution more informative than is required. The use of the term maxim does not mean that the maxim will be followed by everybody all the time. People do violate it and tell lies. And tautologies like Boys are boys and War is war are extreme examples in which the Quantity maxim is violated. At the superficial level, the level of what is said, they are totally uninformative. At a deeper level, the level of what is implicated, however, they are informative. They may convey implicatures like "Boys are naughty and mischievous by nature", "It's no use lamenting the tragedies of war. Terrible things always happen in it. That's its nature."
An example in which the second maxim of Quantity is violated will be:
A: Where is X?
B: He's gone to the library. He said so when he left.
In a sense, the first part of B's answer is enough for A's question. But by adding the second part, the speaker may implicate that he is not sure whether X has really gone to the library.

【答案解析】[解析] 本题考查Grice合作原则中的数量准则和对该准则的违背。数量准则的内容是：使所说的话正好满足当前交谈所需要的信息；所说的话不要多于需要的信息。提出这些准则，并不是说每个人都会一直遵守。人们确实会有违背，会撒谎。