A:①②
B:①③
C:②③
D:①④
—Do you have enough nurses to take care of the injured?
—No, I think we need _______ nurses.
某同学在网上搜索到我国北极科考站﹣黄河站的位置为(78°55′N,11°56′E),结合图“北极地区图”
关于黄河站的叙述,正确的是( )