解：原式=1﹣9+1
=﹣7；
— Of course.
An orange is a little ____ (big) than an apple, but much ____ (small) than a watermelon.
─ Mrs. Zhang was sent to teach English in a poor mountain village last year.
─ She said she would never forget some pleasant ______ while working there.
一次函数y=﹣5x+2的图象不经过第____ 象限．
