A:on which arc located
B:where is located
C:which locate
D:which are located
峰林、溶蚀洼地、石柱、石笋都属于地面喀斯特地貌。
有关亚洲的叙述,正确的是( )
第27届全国青少年科技创新大赛中,有47名青少年获得了一等奖。在获奖者中,有的同学建议申请成果专利,有的同学则仍未没有必要。对此,下列看法正确的是( )