I had about 10 minutes to exercise before I had to pick up my two older daughters from school yesterday．It was a busier day than usual for me with a couple of meetings besides my regular work．
   Years ago，I would have put off my workout and would have left things for the next day．But since it was a busy day as well，I knew that I may not have all that much time either．So，I picked up my kettle-bell （啞鈴） and went to town for 4 minutes．
   See，4 minutes，if that's all you've got，is enough to give your body a great fat-burning exercise．How did I get a killer workout in 4 minutes？I used a training workout discovered 10 years ago by a Japanese Sports Scientist called a TABATA．
   It includes 20-second periods of warm-up，followed by 10-second periods of rest and 4-minute straight exercise．How is a 4-minute exercise able to burn fat？It all depends on the quality of work you do．Not on the quantity．Here's how I did it yesterday．
   You should never forget your warm-up．A TABATA workout is 20 seconds of 2-arm Kettle-bell swings，10 seconds rest，20 seconds push-ups，and 10 seconds rest．You should do those 4 rounds．That's it．I was done in a total time of 8 minutes by the time and when I got to school my heart was still pumping pretty hard．
   A healthy body is needed for studying and working，and efficiency （效率） is the key to building a great body in the least amount （數(shù)量） of time possible and you can't get more efficient than a 4-minute workout．

（1）We can learn from the passage that the author

A

A

．
A．is busy with his work
B．has a weak body now
C．has two children in all
D．is a manager in a film
（2）The underlined phrase "went to town" in Paragraph 2 means "

C

C

"．
A．put off doing something
B．went to a very small city
C．did something with interest
D．hated to do something
（3）What is the most important thing in taking exercise according to the author？

B

B

A．The goal
B．The quality
C．The quantity
D．The method