先通读下面的短文，然后根据短文内容和所给首字母，在空格内填入一个适当的词，使短文意思完整。
In many countries, people ttravel 【小题1】by car or by bike. They also get from place to place using ppopular 【小题2】transport such as buses and trains. However, some people live in parts of the world where it is iimpossible 【小题3】to build roads.
It is difficult to wwalk 【小题4】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 ppull 【小题5】them on sleds(雪橇). Riding a snowmobile(雪地摩托) is a more mmodern 【小题6】, but expensive way of getting around on snow.
In desert(沙漠) like the Sahara in North Africa, people ssometimes 【小题7】get around on camels. Camels survive wwell 【小题8】in the desert, not because they can ssave 【小题9】water in their bodies though! They can survive without water for two weeks and without ffood 【小题10】for up to a month. HHe 【小题11】 can only go without water for about three to five days.
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解析：
【小题1】本句的含义为在许多国家人们乘小汽车或骑自行车旅行，故本句空格处填旅行的单词travel。
【小题2】本句的含义为他们使用受欢迎的交通方式从一个地方到另一个地方，故本句空格处填受欢迎的单词popular。
【小题3】本句的含义为一些人居住在建造道路是不可能的地方，故本句空格处填不可能的单词impossible。
【小题4】本句的含义为在雪中行走很难，故本句空格处填走的单词walk。
【小题5】本句的含义为如果他们想行驶更远，他们可以用狗来拖着雪橇，故本句空格处填拖着的单词pull。
【小题6】本句的含义为在雪中骑着雪地摩托是最现代但是却昂贵的一种方式，故本句空格处填现代的单词modern。
【小题7】本句的含义为在沙漠里人们有时骑着骆驼，故本句空格处填有时的单词sometimes。
【小题8】本句的含义为骆驼在沙漠中生存的非常好，故本句空格处填好的单词well。
【小题9】本句的含义为骆驼在它们的身体里可以储存水，故本句空格处填储存的单词save。
【小题10】本句的含义为没有食物骆驼能存活一个月的时间，故本句空格处填食物的单词food。
【小题11】本句的含义为没有水他仅仅只能走三五天，故本句空格处填他的单词He。