点M(x0,y0)在圆x2+y2=R2外,则直线x0x+y0y=R2与圆的位置关系是( )
On April 25th,2007,thousands of Russians went to say farewell to Boris Yeltsin—the country's first popularly ________leader.
美国波音飞机的部分发动机在英国制造,部分尾翼在中国制造。这说明( )