Question

20．Bicycle Sharing
Foryears，bike-sharing plans have been common in big cities around the world，including in China．Examples include Paris's Vélib and London's Santander Cycles （"Boris bikes"）．But these require customers to return the bicycles to docking stations （泊车位）．In China，a more user-friendly approach is spreading rapidly．It involves bikes that can be paid for using a smartphone and left anywhere．GPS tracking enables them to be located with a mobile app．A ride typically costs only one yuan（﹩0.15）on a bike in an eye-catching colour．
The first such service was launched in June 2015 by a startup called Ofo．The company now has around 2.5m yellow-framed bikes in more than 50 cities in China．Its main rival，Mobike，which started up only a year ago，says it has"several million"of its orange-wheeled bikes spread across a similar area．Bluegogo has half a million bikes in six Chinese cities．It plans to add a new city every two weeks．
However，the dockless system is easy to abuse．Some riders hide the bikes in or near their homes to prevent others from using them．Another trick involves scratching off a bike's QR code to stop others from scanning it．A bigger problem for the new firms is persuading people to use bikes instead of cars．Thirty years ago，63% of Beijingers cycled to work．Now，only 12% do．Many people think that cycling is only for the poor．A dating-show contestant famously said in 2010 that she would"rather cry in a BMW than smile on a bike．"Cycling is also dangerous．About 40% of road accidents involve bicycles，according to a report in 2013．Some city authorities accuse the bike-sharing firms of causing congestion．This month，the southern city of Shenzhen ordered limits on the number of shared bikes．Other cities，including Shanghai and Beijing，are considering similar measures．
Despite some disadvantages，such user-friendly services represent the kind of green innovation that China wants and may even bring"a revolution"．

Answer 1

分析 写好这类作文要注意几个步骤：1． 认真审题，找准提示语中的关键词或句，确定中心思想．2． 依据关键句，草拟提纲，梳理文章的脉络3． 准确定位人称、时态．注意使用高级词汇和高级句型使文章显得更有档次．4．最后还要认真查验是否有漏写情况，有无拼写错误及标点误用等
高分句型一：
A user-friendly bike-sharing plan is taking off in China，which sparks the development of bike sharing companies
一个用户友好型的自行车共享计划是在中国起飞，这激发了自行车共享公司的发展．
高分句型二：
However，the disadvantages，including the abuse of the dockless system，the danger of cycling，and the congestion caused by shared bikes，have aroused much concern．
然而，包括dockless体制的弊端，自行车的危险性，和拥塞的共享自行车引起的缺点，引起了极大的关注．

解答 IV．Summary Writing （10分）
A user-friendly bike-sharing plan is taking off in China，which sparks the development of bike sharing companies（高分句型一）．（1分） However，the disadvantages，including the abuse of the dockless system，the danger of cycling，and the congestion caused by shared bikes，have aroused much concern（高分句型二）．Despite this，the services represent green innovation．（1分）   （结构5分，另外5分语言分）

点评 开放性作文给出一定的写作主题，并此为基础进行思维和联想，自由发挥．不仅考查学生在内容、结构安排、语言运用和组织方面的能力，而且对学生的想像力、发散思维、归纳判断能力也有很高的要求．