5. From the last sentence of this passage we conclude that _____.
　A. businesses usually do not pay much for advertisement
　B. businessmen know well that advertisement could bring them more profits
　C. advertisement could hardly convince people of the value of the goods
　D. advertisement usually cost businesses large amounts of money
答案：B 逻辑推理题。文章最后一句话的意思是：“很明显，如果商家对产品的利润没有把握的话，是不会花很多钱投资广告的。”换句话说：商家非常清楚广告会给他带来更大的利润。因此B是正确答案。

Passage 2 
How men first learned to invent words is unknown; in other words, the origin of language is a mystery. All we really know is that men, unlike animals, somehow invented certain sounds to express thoughts and feelings, actions and things, so that they could communicate with each other; and that later they agreed upon certain signs, called letters, which could be combined to represent those sounds, and which could be written down. Those sounds, whether spoken, or written in letters we call words.

The power of words, then, lies in their combinations — the things they bring up before our minds. Words become filled with meaning for us by experience; and the longer we live, the more certain words recall to us the glad and sad events of our past; and the more we read and learn, the more the number of words that mean something to us increases.

Great writers are those who not only have great thoughts, but also express these thoughts in words which appeal powerfully to our minds and feelings. This charming and telling use of words is what we call literary （文字的） style. Above all, the real poet is a master of words. He can convey his meaning in words which sing like music, and which by their position and association can move men to tears. We should therefore learn to choose our words carefully and use them accurately, or they will make our speech silly and rude.

6. The origin of language _____.
　A. is reflected in sounds and letters
　B. is handed down from generation to generation
　C. dates back to the prehistoric period
　D. is a problem not yet solved
答案：D 细节题。答案在第一段：“the origin of language is a mystery.”因此，语言的起源仍然是个迷，还没有得到解决。

7. According to the passage, words are _____.
A. visual letters　　                       B. represented by sounds
C. represented either by sounds or letters       D. signs called letters
答案：C 细节题。第一段谈到：“人类起初用某种声音进行交流， 后来又有了字母，字母结合起来可以代表声音，也可以写下来。因此，这些说出来的声音也好，用字母写出来的声音也好，被称为单词。”所以B是正确答案：单词即可以代表声音，也可以代表字母。

8. The power of words lies in their _____.
　A. beauty　　B. accuracy　　C. combinations　　D. charm
答案：C细节题。答案在第二段的第一句话：“the power of words, then lies in their combination”语言的魅力在于他们的组合。