→Eating more vegetables will ____ ____ ____ to you.
-- Have you ever been to Paris, one of cities in Europe?
-- No. But one day I might go there on vacation.
据测算,我国每天因土地沙漠化造成的经济损失为1.5亿元,若一年按365天计算,我国一年因土地沙漠化造成的经济损失为多少元(用科学记数法表示,且保留两个有效数字)?
造成“世界屋脊”和“鱼米之乡” 农业生产差异的根本原因是( )