题目

在矩形ABCD中，AB=5，BC=12，⊙A的半径为2，若以C为圆心作一个圆，使⊙C与⊙A相切，那么⊙C的半径为 。 答案：【1】11或15—How did you ________ the old valuable house?—It used to be ________ my uncle. He left it to me in his will.A．take possession of；in possession ofB．take the possession of；in the possession of C．take possession of；in the possession ofD．take the possession of；in possession of