题目

—______ is it from your home to the school?   —About ten minutes’ walk.A．How farB．How longC．How oftenD．How soon 答案：A解析:略（2011•宜兴市模拟）（1）计算：(2008-π)0+(13)-1-2cos45°（2）解方程：1x-2+3=1-x2-x．