A:x=π12
B:x=π6
C:x=π3
D:x=2π3
我国四大工业基地分布图,图中数字序号代表京津唐工业基地的是( )
点P(m-n,-m)到直线xm+yn=1的距离等于( )
—_______ is the weather in New York?
—It's very cold, because it just snowed yesterday.