Part I
a c b b b d b c a b
Part II
A. a c b d a c b a c b d c a d b c a a b c
B. a d b a c d b a c b a d c b a c d a b c
Part III
b a c b d a b a d c b a b c d
Part V
A
1. He went into the children’s room to see what they were up to.
2. The little girl turns to her mother for sympathy and help whenever she feels uncomfortable.
3. They supplied an important clue to the bank robbery and all the criminals were arrested.
4. He paid lip service to the need to cooperate with others but usually went his own way.
5. The factory is no longer emitting black smoke into the air from its chimneys as protective filters are being used.
6. The composer often visits kindergartens to listen to the children sing and try out his new songs on them.
7. After morning exercises, he took a cold shower and instantly he felt refreshment of body and mind.
8. His discoveries were hailed as a great step-forward in medicine.
9. He scratched his head and knitted his brows but could not come up with a good method of increasing the food supply.
10. His courteous behavior is in consistency with his gentle character.
11. Seeing him sitting alone in the corner and smoking, I know he must have had something on his mind.
12. Steam can generate electricity by turning an electric generator.
13. His mistake mainly lies in the fact that he didn’t attach enough importance to investigation.
14. We are in great need of skilled workers who can assemble cars very quickly.
15. The meeting didn’t break up until eleven o’clock last night.
B.
To get a better understanding of how advertisers persuade us to buy their products, we’d better have a bird’s eye view of human nature. Advertisers discovered years ago that all of us love to get something for nothing. An advertisement which begins with the magic word FREE can rarely go wrong. Advertisers not only offer free samples, but free cars, free houses, and free trips round the world as well. Radio and television have made it possible for advertisers to capture the attention of millions of people in this way.
C.
广告能够直接促进商品以合理的价格更快地销售，从而建立一个稳固的国内市场，并且可能使商品以具有竞争力的价格出口。它将人们的注意力吸引到新的消费观念上，极大地促进了生活水平的提高。它通过增加对商品的需求来保证对劳动力的需求的势头不减，因此广告也是对付失业的一种行之有效的手段。它降低了许多服务的成本：没有广告，你每天读的报纸的价格将会是现在的四倍，电视节目收费也要翻番，乘坐公共汽车或地铁的费用也要上涨20%。
也许最重要的是，广告为你所购买的商品和所受到的服务的内在价值提供保证。没有哪个正规的广告商敢推销没能达到广告中所作的许诺的产品。他有可能靠误导性的广告在短时间内蒙骗一些人，但不会长久，因为好在公众很明智，不会再次去买那劣质商品。如果看到某种物品的广告始终如一，经久不衰，那就是我所知道的最好的证明：这物品是名副其实、物有所值的。
Part VII
a c a a b b c b c b