【导语】中国教育在线成人高考频道根据《全国各类成人高等学校招生复习考试大纲》收集整理了2021成考专升本《英语》单项选择练习试题以供广大考生参考，具体如下：
成人高考有疑问、不知道如何选择主考院校及专业、不清楚成考当地政策，点击立即了解》》
2021年成人高考专升本《英语》单项选择练习一及答案(7)
点击查看：2021年成人高考专升本《英语》单项选择练习一及答案汇总
21.Some airplanes are ___D_______ going 1,000 miles an hour.
A.able of B.possible of C.probable of D.capable of
22.Empty ___B_______ makes the most sound.
A.ship B.vessel C.boat D.yacht
23.They had _____D_____ evidence that the factory was responsible for the pollution.
A.inclusive B.seclusive C.exclusive D.conclusive
24.The young Mr.Wang has _____B_____ in the army for twenty years.
A.serviced B.served C.maintained D.stayed
25.We need to ____D_____ the quality of our goods but not increase the price.
A.remain B.retain C.stay D.maintain
成人高考有疑问、不知道如何选择主考院校及专业、不清楚成考当地政策，点击立即了解》》
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