Rivers are one of our most important natural resources(资源).

1个回答

  • 小题1:D

    小题2:C

    小题3:D

    小题4:C

    小题5:A

    小题1:根据文章内容The greatest of all for navigation(航海), however, is the Amazon in Brazil(巴西)可知答案为D

    小题2:根据文章内容可知答案为C

    小题3:根据文章内容Then people can use the water not only to irrigate(灌溉) their fields but also to make electricity for their homes and industries.可知答案为D

    小题4:根据文章内容the water in the rivers becomes polluted with chemicals and other materials.卡答案为C

    小题5:根据文章内容大意可知答案为A