陈向东GREGMATLSAT逻辑推理题目查找和发问

Jennyseer

既然有人传上来这本大砖头书，很多人也在做，就麻烦xdjm们一起统一一下发问格式，这样搜索起来也方便。暂时为 page-题号，比如我现在想问：p50-33就是第50页33题

during a single hour,an automatic camera photographed 100 vehicles that were speeding  on a new way road ,and police a mile farther down the road photographed 49 vehicles that were speeding .since every vehicle that passed the automatic camera also passed the police during the hours ,the police photographed  fewer than half of the vehicles that were speeding when passing them.
which of the following is an assumption on which the reasoning in the arguement above depends?
A:fewer half of the vehicles that were speeding when they passed the police were already speeding when they passed the automatic camere.
B: drivers who are not exceeding the speed limit are less likely than drivers who are speeding to reduce their driving speed when they see a marked police car.
C:most of the vehicle s that were speeding when they passed the automatic camera were still speeding when they passed the police.
D:more than100 vehicles passed the automatic camera during the hour in which the automatic camera photographed 100 speeding  vehicles.
E:not more than 100 vehicles drove past the police during the hour in which  the police  photographed 49 speeding vehicles.