题目

The superman can burn things with his eyes._______ special his eyes are!    A. What               B. What a           C. How              D. How a 答案：C方程-x2-3=-56+1-x3移项，得（　　） A、1-x3-x2=-3+56B、1-x3+x2=-3+56C、-x2-1-x3=-3+56D、x2-1-x3=-3-56