host event sweat track fitness athlete medal captain

（1）The successful organization of the 2008 Beijing Summer Games shows the city's abilities to

host

host

international events.
（2）The main function of

sweat

sweat

is to cool our bodies.We also release（釋放）a small amount of waste from our bodies when we

sweat

sweat

.
（3）To keep

track

track

of their passwords，more than one-third of people in the US write down their passwords in a notebook.
（4）Chinese teenagers and youth's

fitness

fitness

levels have been going down because of lack of exercise.
（5）Each

event

event

for Athens 2004 Olympic Games shows the name of the sport for which it is presented.
（6）The rules of athletic track

medal

medal

are simple：the athlete who crosses the line first is the winner.
（7）An

athlete

athlete

finishes the race when his chest（胸部）or stomach reaches the finish line，but the head，neck，arms，legs，hands or feet are not included.
（8）On Jan 18，1778，James Cook，the

captain

captain

of a sailing ship，discovered the Hawaiian Islands，which he called the "Sandwich Islands".