题目

Diane is active in class and finishes her homework on time. ______, she does well in every exam. A . In fact B . In other words C . As a result D . On the other hand 答案：C计算：（1）﹣15+（﹣8）﹣（﹣11）﹣12 （2）（3） （4）﹣23+[（﹣4）2﹣（1﹣32）×3]