We planed ____ (have) some tea, but we decided ____ (stay) for two hours.
A. a big city B. on foot C. are different from
D. last night E. talked about F. has got
先化简，再求值：﹣a2b+（3ab2﹣a2b）﹣2（2ab2﹣a2b），其中 a=﹣1，b=﹣2．
已知y1＝x－5，y2＝2x＋1．当y1＞y2时，x的取值范围是（ ）
