Section A 1 A. watching TV B. Swinging the chanel C. Listening to the radio D. Changing the news program 2 A. 6o minutes B. 50 minutes C. 45 minutes D. 15 minutes 3 A. At a kitchen B. At a restaurant C. At a grocery D. At a teahouse 4 A. sunny B. rainy C. windy D. cloudy 5 A. a dentist B. a patient C. a barber D. a cook 6 A. Neither liked it. B. They both liked it. C. Her mother didn’t like it, but her father did. D. Her father didn’t like it, but her mother did. 7A. Stay in the office B. Go to Alice’s house C. Visit Fred’s family D. Go to the movie 8A. $11 B. $8 C. $5 D. $3 9A. Buy a watch B. Invite friends to dinner C. Go out to dinner D. Write invitations 10A. Because she is on an American tour with
her mother. B. Because she is at home on a sick leave. C. Because she is attending her sick mother at home. D. Because she is in America to see her mother. Section B 11A. It was passed by word of mouth. B. It traveled very quickly. C. It was passed by newspaper. D. It was accurate. 12A. They tell people about the weather. B.They help lower the price of the newspaper. C. They help lower the price of the products. D. They supply news from all over the world. Section C Most of us who have ever cleaned a house would be much happier if there were less dust. However, without dust there would be less rainfall and sunsets would be S
  1. Rain is formed when water molecules(分子) in air collect
around particles ( 微 粒 ) of dust. When the collected water becomes heavy S2__, the water droplet falls to the earth as rain. Thus water vapor could be much less S3__ to turn to rain without the dust particle. The water vapor and dust particles also S4__ to reflect the rays of the sun. At sunrise and sunset, when the sun is below the S5__, the dust and water vapor molecules reflect the longer red wave length of light, so that we can see them for more time than any of the other wave length, starting ealier in the case of sunrise and S6__ longer in the case of sunset. The more dust particles in the air, the more colorful the sunrise of sunset.
 

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