英语选修8 外研版module1同步练习题（1）及答案 module1 section i ⅰ.单词拼写 1．__________(极地的) expeditions are very dangerous. 2．they are polar ______________(探险家)． 3．what is your ______________(每年的) income? 4．this area had a heavy ______________(降雨量) last month. 5．this place is very ______________(荒凉的)． 6．you should ______________(适应) yourself to the new environment. 7．an arctic ______________(探险) is helpful for human beings.
