题目

估计20的算术平方根的大小在（ ）  A、2与3之间    B、3与4之间           C、4与5之间                 D、5与6之间 答案：C －_________ that made Mrs．White so upset? －Her son’s making trouble in the school． [　　] A． Where was it B． Why was it C． How was it D． What was it