题目

已知f(x)=asin(x+)+bcos(x+),其中a,b, ,均为非零实数，且f（2007）=1， 则f(2008)=         答案：-1 解析:考查了诱导公式的运用One of the things to be learnt in a foreign language is guessing all the time what kind of thing to come when listening to someone talking. People do this all the time in their own language, so it is necessary (必要的) to do this in a foreign language, too. Here are some examples.   1. "What's the matter？" "I went to a party last night, so I…"   2. "I feel so tired these days."" I think you'd better…"   3."Of course, she never stops talking. She is one of the most…"You can see from the above three examples that the context (上下文) helps a lot in understanding what is being talked about. So "guessing "is very important in understanding English, especially (尤其)spoken English.【小题1】This passage tells us mainly about _________.A．the importance of "guessing " in learning a foreign languageB．how to guess what one is going to talk aboutC．some examples of right guessingD．how important it is to guess all the time【小题2】from the context, we can see maybe the finished answer in EXAMPLE I is _________.A．didn't have a good time. B．went to bed very late.C．felt unhappy.D．got up very early.【小题3】Maybe the finished answer in EXAMPLE 2 is ________.A．have a good rest and take good care of yourself.B．have something to drink.C．get some help from your friends.D．be more careful.【小题4】Maybe the finished answer in EXAMPLE 3 is ______.A．famous film stars.B．beautiful women.C．famous speakers.D．talkative women.【小题5】From the passage we can infer (推断) that guessing is ____in learning a foreign language.A．the only wayB．more important in spoken English than in written EnglishC．more important than any other wayD．more important in written English than in spoken English