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单选题 One of the main reasons for air pollution is that many cars _______ smoke into the atmosphere
学科：默认课程
时间：2025-12-16 06:09:44
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This watch is _______ by hand, not by machine, so it is very expensiveA. flatB. coinedC. boredD. manufactured
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The president of that company was very calm during the political _______A. failureB. fashionC. proceedD. crisis
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_______ is usually the chief enemy of the camera lensA. OxidationB. vainC. MoistureD. Deck
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On our way to Beijing, we visited Xi'an, a city of two million _______, and stayed there for two daysA. insectsB. humanC. inhabitantsD. flights
题目7单选题
One of the main reasons for air pollution is that many cars _______ smoke into the atmosphereA. gatherB. hireC. dischargeD. escape
题目8单选题
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题目10单选题
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