题目

根据下表： x－3－2－1…456 x2－3x－5135－1…－1513 确定方程x2－3x－5＝0的解的取值范围是( ) A．－3＜x＜－2或4＜x＜5 B．－2＜x＜－1或5＜x＜6 C．－3＜x＜－2或5＜x＜6 D．－2＜x＜－1或4＜x＜5 答案：D 21. —What did you think of _____ president? —I didn’t care for him at first, but after ______ time I got to like him. A.the, a               B. /, the               C. the, the             D. /, a