Jim Fixx had been a heavy smoker and weighed 214 pounds when he（1）（）running in the 1960s.He soon（2）（）the benefits from running.His weight decreased（3）（）60 pounds by the time when his book，The Complete Book of Running，was published.His book（4）（）millions of people.In his book and on television talk shows，he extolled the benefits of physical exercise and how it（5）（）increased the average people’s life expectancy.His readers and audience became more health-conscious.However，（6）（）their shock，Fixx died at the age of 52 after his daily run.Many who opposed his beliefs said this was the（7）（）that running was harmful.However，his supporters（8）（）that the real cause of Fixx’s death was a heart attack.He came from a family where men had poor health stories.His father（9）（）a heard attack at the age of 35 and died of a heard attack at 42.Given Fixx’s unhealthy lifestyle until he took running，many argued that running added many years（10）（）his life.

（1）、（）

A.took down
B.took in
C.took on
D.took up