九年级英语下Unit13 Section A(3a-Grammar Focus)习题(含答案)

Unit 13 We’re trying to save the earthSection A(3a—Grammar Focus)Ⅰ. 根据句意及所给汉语提示，写出句中所缺单词。1. Greg has always wanted a guitar, but he can't _________(买得起) one.2. Many countries made _________(法律) to stop smoking in public places.3. The trade with foreign countries caused China's _________(工业) to develop quickly.4. Henry was so excited when he received an invitation to speak at a(n) _________(科学的) meeting.5. The poor workers were often made to work more than 16 hours a day by the _________(残酷的) boss. Ⅱ. 根据语境及所给汉语提示，完成下列句子或对话，每空一词。1. This word _________ _________(以……开始) the letter “a”.2. Who is Claire? I have never _________ _________(听说) her.3. The waiter made a mistake in _________ _________(加起来) the bill (账单).4. Alex _________ _________ _________(参加) many after-class activities when he was at junior high school.5. The government _________ _________ _________(采取了快速的行动) to help the people in the train accident.6. —How much shall I _________ _________(付费) the phone call?—You don't have to. This is free.7. After the earthquake, the villagers were completely _________ _________(隔绝) from the outside.8. Nelly loves fast food a lot though many others think it _________ _________ _________(对……有害) health.9. Can the man shoot the bird _________ _________ _________ _________(在……顶部) the tree?10. Do you think that we should _________ _________ _________(使用公共交通) to protect our environment?Ⅲ. 根据短文内容及括号内所给(短语)动词的提示，用正确的时态或语态补全短文，使短文完整、通顺。The clockwork radio (发条式收音机) is the only radio that doesn't need batteries (电池) or electricity. It is powered by turning the handle (手柄) for a minute. Nowadays, thousands of these radios (1)_________(make) every day.   The clockwork radio (2)_________(invent) in 1991 by Trevor Bayliss, a British inventor. Trevor had the idea while he (3)_________(listen to) some news on the radio about Africa. It (4)_________(report) that Africans were dying of Aids and there was no easy way to send them information about the disease.But no one would help Trevor develop his idea for a new kind of radio. Finally, in 1993, his invention (5)_________(show) on a TV program, and afterwards, a South African businessman (6)_________(hear of) Trevor's clever idea and contacted (联系) him. The first Freeplay radios (7)_________(build) in South Africa in 1995.Since then, the radios (8)_________(be) a great success. Trevor has been given many prizes, including one from Nelson Mandela.Trevor (9)_________(hang) a letter on the wall in his house. It (10)_________(write) in 1991 by another engineer, who explained why he thought Trevor's idea for a clockwork radio couldn't possibly work! 答案Section A (3a—Grammar Focus)Ⅰ. 1. afford  2. laws  3. industry 4. scientific  5. cruelⅡ. 1. begins / starts with  2. heard of 3. adding up  4. took part in 5. took quick action  6. pay for 7. cut off  8. is harmful to / bad for9. at the top of 10. use public transportationⅢ. 1. are made  2. was invented 3. was listening to  4. was reported5. was shown  6. heard of 7. were built  8. have been 9. has hung  10. was written