题目

答案：解：x（x﹣3）=-x+3 x（x﹣3）+x﹣3=0 （x﹣3）（x+1）=0---------4分 解得：x=-1或x=3．--------6分 备注：上述两题解法不做要求，做对即可加分。She knows that as a secretary she must be pleasant and helpful no matter how busy she is or what kind of ____ she may be in. A. mood　　　 B. mind　 C. form　　　 D. thought