III. Each sentence below has four underlined parts...

III. Each sentence below has four underlined parts. Pick out the incorrect part and then correct it. (20%)（共20分，每题2分） 1. Unlike many other people, the America Indians had to discover A B C Agriculture for themselves.() D 2. When a spider catches an insect, it releases some poison into an A B insect with its fangs, the poison of most spiders is harmless to man. C D () 3. We see lighting before we hear the thunder because sound travels A B more slowly than light is. () C D 4. Winston Churchill, as the British Prime Minister, leads his country A B to victory during the Second Word War. () C D 5. Bats are able to guide them by producing sound waves too high for A B C us to hear. () D 6. No sooner had the hikers set out on their trip as it began to rain. A B C D () 7. Doctor Godwin says that no matter how forceful arguments against A B smoking there are, many people persist in smoking.() C D 8. Since two or three hours, those technicians have been working on A B C D the computer. () 9. The fire began in the fifth floor of the hotel, but it soon spread to A B C D the other floors. () 10. Neither in his campaign nor his acceptance speech did Mr. Miles A B C acknowledge those whose assistance had won him the nomination. D ()