20．I have been amazed at times thatcruelty can go unpunished．——青夏教育精英家教网——

20．I have been amazed at times thatcruelty （残忍） can go unpunished．

19．Over the past half century，usingchemical （化学） fertilizers has become very common in farming．

18．They noticed fifty and twenty dollar billsfloating （漂浮）in the water．

17．She wasawarded （授予） the prize for both films．

16．It isbeneficial （有益处） for the speedy movement of passengers and cargo．

15．Only then how much damage had been caused．（　　）

	A．	she realized		B．	she had realized
	C．	had she realized		D．	did she realize

14．It's a soldier's duty to obey orders anddefend（防卫；保卫）his country．

13．Contrary（相反的）to many millionaires，he cares little about being famous．

12．Theyovercame（克服，战胜）all kinds of difficulties after they made up their mind．

11．They stoppedarguing（争论）and glared at each other．

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