I prefer skiing to climbing because I think climbing is skiing.
A：not as exciting as
B：not more exciting as
C：not most exciting as
D：more exciting than
国家气象局每天为电视新闻提供的卫星云图主要使用了( )①遥感技术 ②地理信息技术 ③全球定位技术
人民代表大会是我国国家政权的组织形式。（ ）
已知两直线l1：（a+1）x﹣2y+1=0，l2：x+ay﹣2=0．当a=____时，l1⊥l2．
