如图,M是Rt△ABC的斜边BC上异于B、C的一定点,过M点作直线截△ABC,使截得的三角形与△ABC相似,这样的直线共有( )
The Red Army soldiers had to fight ________ all kinds of difficulties in their fight ________ the people's freedom.
关于“瓦肆“(也称”瓦子“)的说法,不正确的是( )