2．Leadfooted drivers refer to the ones________.
A．who drive too carelessly
B．who drive over the speed limit
C．who are partly disabled
D．who drive too slowly
答案：B 考查推理判断。根据第一段的第二句“When the technology becomes commercially available, it could help leadfooted drivers avoid tickets and also save lives”可推知，leadfooted drivers指开车超速的司机，故选B项。
3．The second paragraph mainly talks about________.
A．the project of the builtin product
B．how the product is programmed
C．the functions of GPS in cars
D．why the system becomes popular
答案：B 考查主旨大意。根据第二段的整体内容可知，本段主要介绍了这个新产品的原理和实际操作方式，故选B项。
