语法填空请适当注明解析THE2,298-kilometerBeijing-Guangz语法填空请适当注明解析THE2,298-kilometerBeijing-GuangzhouHigh-speedRailway16(official)openedtopassengersonDecember26,2012.Itistheworldslongesthig

Question

语法填空 请适当注明解析 THE 2,298-kilometer Beijing-Guangz
语法填空 请适当注明解析 THE 2,298-kilometer Beijing-Guangzhou High-speed Railway 16_____ (official) opened to passengers on December 26,2012.It is the world s longest high-speed rail route.The 17_____ (design)speed of the track is 350 km^,though speeds during the initial period of operation will be limited to about 300 km/h.The new route cuts the travel time between Beijing and Guangzhou 18 almost two thirds,from 22 hours to roughly eight hours .On December 1,2012,not long before the opening of the Beijing-Guangzhou High-speed Railway,the Harbin-Dalian High-speed Railway,19_____ first high-speed line ever to cross land that lies frozen for almost half a year,began operations,20_____ allows passengers to appreciate the view off the coast from Dalian in the morning,21_____ the winter snowscape of frosty Harbin in the afternoon .At present the total 22_____ (long) of high-speed lines in China 23_____(reach)9,349 km.With four main lines 24_____ (run) east-west and four north-south,the country s high-speed train network is the world s largest.China plans to expand 25_____ high-speed railway network to 50,000 km by 2020,to cover almost all large and medium-sized cities.

Answer 1

16 Office专有名词,17 designed设计的（被设计的,设定的）,18 by（减少了,Ps.根据后文为8小时说明是减少了三分之二,若是减少至三分之二则应该为to）,19 the（插入语,类似adj）,20 which非限定定语从句,21 of (此处跟前面off the coast from Dalian是并列的,前面有逗号,此处可以不用填写或者写上of 表示The view of the winter...) 22 length长度,23 reachs(reaches 表示陈述事实,has reached也可以吧,感觉表示一种成就),24 running(with后面V-ing) 25 the（限定词,或者写个present 现在的）—————以上纯属个人兴趣爱好填写,正确答案还需参考原答案.