全面提分从解决每个单项的薄弱点开始，锁定问题，各个击破。
主旨题和细节题哪个是薄弱点
逻辑推理条件是否充分
选项都没有语法错误选哪个
数学多考1分，语文可以少考3分
练熟题型思考步骤，充分条件准确判断
IR考出8分点亮成绩单
题不在多，吃透就行。知其然且知其所以然，就能经得住考场挑战。
不扯淡，只讲题
每个人都曾经是一只小白，考GMAT你需要知道的事情都在这里。
名师逐题讲解，即点即听；提出问题当天解答，实时推送至微信；不废话，只讲题！
Enforcement of local speed limits through police monitoring has proven unsuccessful in the town of Ardane. In many nearby towns, speed humps (raised areas of pavement placed across residential streets, about 300 feet apart) have reduced traffic speeds on residential streets by 20 to 25 percent. In order to reduce traffic speed and thereby enhance safety in residential neighborhoods, Ardane's transportation commission plans to install multiple speed humps in those neighborhoods.
Which of the following, if true, identifies a potentially serious drawback to the plan for installing speed humps in Ardane?
