【题目】下列有关我国主要土地利用类型分布的叙述，正确的是（ ）
A.我国的耕地主要分布在非季风区
B.我国的林地主要分布在高原
C.我国的旱地主要分布在半干旱地区
D.我国的草地主要分布在400毫米年等降水量线以西
【答案】D
【解析】A、中国各类土地资源的空间分布不平衡，土地生产力区域差异明显。耕地主要分布在东部季风区的平原、盆地以及低缓丘陵地区，西部耕地较少，而且分布零散。故A不符合题意；
B、天然林地主要分布在东北、西南的边远山区，东南部山区的林地多为人工林和次生林。西北和华北的大部分地区林地很少。故B不符合题意；
C、我国各地区土地资源的质量差别很大。东部季风区，雨热同期，土壤肥沃，生产力高，集中了全国90%左右的耕地和林地。其中，北方半湿润地区平原广阔，耕地多，但热量较低，降水较少，以旱地为主；南方湿润地区多丘陵、山地，但热量高，降水丰沛，以水田为主。故C不符合题意；
D、400毫米年等降水量线把我国大致划分为东南与西北两大半壁。东南半壁受季风影响，雨热同期。西北半壁地处内陆，大多数地区严重缺水，水草肥美，适宜放牧，是我国重要的牧业地区。故D符合题意。
故选：D
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