题目

听下面一段较长对话，回答以下小题。 （1） What is the woman's plan for Saturday? A . Going shopping. B . Going camping. C . Going boating. （2） Where will the woman stay in Keswick? A . In a country inn. B . In a five-star hotel. C . In her aunt's home. （3） What will Gordon do over the weekend? A . Visit his friends. B . Watch DVDs. C . Join the woman. （4） What does the woman think of Gordon's coming weekend? A . Relaxed. B . Boring. C . Busy.“行列式”是我们今后将要学习的一种基本运算，定义.aamp;bcamp;d.=ad-bc，该记号叫作二阶行列式，若.x+1amp;2-x1-xamp;x-1.=15，则x=______．