2015届高考考前热身专练：广告布告、健康保健类阅读
1. (2014届天津市蓟县第二中学高三第一次模拟考试英语试卷）
Fruit powered digital clock
Fruit’s not only good to eat, but it can also power this Fruit digital Clock. This clock uses the scientific principles on which modern electrical storage batteries are based. The acid from the fruit helps transmit an electrical flow between two metal poles. The clock is priced at US $ 15. Connecting any fresh fruit or vegetable to the clock will make it work. The fruit is a clean, renewable source of electrical power.
USB vacuum
Do you know the dirtiest parts of your desk are probably your keyboard and mouse? Get a USB Mini Vacuum with retractable(可伸缩的) cable and suck away all that junk. The US- made product is priced at US $14.
