Every winter in Alaska a race is held. But this is no ordinary race. Teams of dogs pull sleds
（雪橇）along the snow and ice,_61
(carry) up t0 500 kg of supplies.A single driver is in
charge of each team,and stands on the sled. This race 62
(know) as Iditarod runs from the
town of Anchorage to the village of Nome,a journey of more than l,800 kiLometers.lt usually
takes the teams about ten days to complete the course.
The Iditarod is usually run in 63
(extreme) difficult weather conditions. Daytime 64
(temperature) range from zero to minus 40 degrees. Visibility（能见度）is often very poor, 65
drivers never allow 66
(them) to become separated from their team of dogs. Indeed, the
drivers depend almost entirely 67 t
he dogs for their survivaL
The origin of the race 68
(go) back many years to a time 69
some medicine needed
to be taken from Anchorage to Nome,a very remote village. Because of severe weather,the only
way to send the medicine was to use dogs. Happily,the medicine was delivered just|n time to
save lives. To celebrate the heroic journey,Alaskans 70
(deveLop) the Iditarod.
I‘m pleased to learn what you are learrung Chinese. I-d like to recommend CoolChinese,the
very useful and power Chinese learning software.
CoolChinese is special designed for non-CHnese speakers who have just been started learn-
ing Chinese. It performs a variety of function and works as a practical guide to Chinese learning.
Firstly,it includes a great deal of images and sounds to help you learn Chinese vocabulary.
Secondly,by adopt the most advanced voice recognition technology,it reminds you the right
pronunciation and intonation all the time like a training partner beside you. All in all,not only
can you use the software to learn Chinese easily,but also you will found learning Chinese is full
I hope you likeit，