A:20°N,30°E
B:25°N,25°E
C:23°26′N,60°E
D:40°S,120°W
I _________ little time to get ready for the test, so I wasn't confident at that time.
①竞争的结果是优胜劣汰 ②竞争比合作更重要
③要学会正确处理合作与竞争的关系 ④合作中有竞争,竞争中也需要合作