301-400: heavy pollution

　　64. Judging from the chart, on which day was the air quality the worst?

　　A. October 13.

　　B. October 14.

　　C. October 17.

　　D. October 18.

　　65. Which of the following can be used to describe the air quality of the week?

　　A. GoodB. Seriously polluted.

　　C. Excellent.

　　D. Slightly polluted.

　　66. Six automatic air monitors are operated in the city except ________.

　　A. Putuo District B. Xuhui District

　　C. Chang’an District D. Hongkou District

　　67. In Shanghai, nitrogen oxide mainly comes from ________.

　　A. the burning natural gasB. the burning cooking gas

　　C. the burning coal

　　D. dust raised by vehicles

　　64、BA

　　CB

　　****************************************************结束

　　Joe and Helen Mills had two small children. One was six and the other four. They always refused to go to bed, and Helen was always complaining (抱怨) about this and asking Joe for help. But as he did not come home until after they had gone to bed during the week, he was unable to help except at weekends.

　　Joe considered himself a good singer, but really his voice was not at all musical. However, he decided that, if he sang to the children when they went to bed, it would help them to relax, and they would soon go to sleep.

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