____.
如图,在平面直角坐标系中,已知点B(4,2),BA⊥x轴于A.
科技进步促进了交通工具的变革。下列由蒸汽机驱动的交通工具是( )
The Greens ________live in the south of Asia . They don't want to move to the north because they ________ the cold weather.