题目

Fitness Zone Live fit, love life Look your best this summer with our wonderful equipment and a tailor — made (量身定制的) program made specially for you by one of our best personal trainers. If you are having a difficult time getting active, Fitness Zone is where you want to be. With a personal trainer assigned (指定) to you, you will be placed in a tailor — made program that will make you look your best in just 12 weeks. With our program, you will get the full benefits of: • Our one - on - one support and expert guidance by the top trainers in our industry. • The use of （2011安徽，2，4分）安徽省2011年末森林面积为3804.2千公顷，用科学记数法表示3804.2千正确的是（    ）A．3804.2×103B．380.42×104C．3.8042×106D．3.8042×107