In many countries,people (travel) (1) by car or by bike.They also get from place to place using (public) (2) transport such as buses and trains.However,some people live in parts of the world where it is (impossible) (3) to build roads.In these places,animals or other (forms) (4) of transport have to be used.
It is difficult to (walk) (5) in snow but easy to ski over it.So in places like Alaska,people use skis.If they want to go faster,they get dogs to (pull) (6) them on sleds(雪橇).Riding a snowmobile(雪地摩托) is a more (modern) (7),but expensive way of getting around on snow.
In desert(沙漠) like the Sahara in North Africa,people (still) (8) get around on camels.Camels survive (well) (9) in the desert,not because they can (store) (10) water in their bodies though!They can survive without water for two weeks and without (food) (11) for up to a month.
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