11.C12.D13.B14.D II.1.contribute 2.evaluated 3.dropped out 4.trustworthy 5.unique 6.running out 7.innocent 8.acknowledged 9.refers to 10.brief 11.live up to 12.humble III.1.capacity 2.contributed to 3.dominated 4.flexible 5.pursue 6.manipulated 7.pregnant 8.innocent 9.prospered 10.circumstances 11.nurition 12.potential IV.(1)sail (2)invention (3)instrument (4)wires (5)device Script for listening practice From the beginning of human history,information traveled only as fast as a ship could sail or a horse could run or a person could walk.People experimented with other ways to send messages. Some people tried using birds to carry messages.Then they discovered it was not always a safe way to send or receive information.A faster method finally arrived with the invention of the telegraph.The first useful telegraphs were developed in Britain and the United States in the eighteen thirties.The telegraph was the first instrument used to send information using wires and electricity.The telegraph sent messages between two places that were connected by telegraph wires.The person at one end would send the information.The second person would receive it. Each letter of the alphabet and each number had to be sent separately by a device called a telegraph key.The second person would write each letter on a piece of paper as it was received.11. C 12. D 13.B 14. D II. 1. contribute 2. evaluated 3. dropped out 4. trustworthy 5. unique 6. running out 7. innocent 8. acknowledged 9. refers to 10. brief 11. live up to 12. humble III. 1. capacity 2. contributed to 3. dominated 4. flexible 5. pursue 6. manipulated 7. pregnant 8. innocent 9. prospered 10. circumstances 11.nurition 12. potential IV．(1) sail (2) invention (3) instrument (4) wires (5) device Script for listening practice From the beginning of human history, information traveled only as fast as a ship could sail or a horse could run or a person could walk. People experimented with other ways to send messages. Some people tried using birds to carry messages. Then they discovered it was not always a safe way to send or receive information. A faster method finally arrived with the invention of the telegraph. The first useful telegraphs were developed in Britain and the United States in the eighteen thirties. The telegraph was the first instrument used to send information using wires and electricity. The telegraph sent messages between two places that were connected by telegraph wires. The person at one end would send the information. The second person would receive it. Each letter of the alphabet and each number had to be sent separately by a device called a telegraph key. The second person would write each letter on a piece of paper as it was received