题目

. Let us suppose that you are in____ position of____ parent. Would you allow your child to do such a thing? A. a; a    B. a; the   C. the; a   D. the; the 答案：.C 解析: 该题考查冠词的用法。in the position of表“处于某一位置”，parent之后未加“-s”，故用a。如图，在□ABCD中，点E、F是对角线AC上两点，且AE=CF．求证：∠EBF=∠FDE．