Suppose you begin reading a book on page h and end on page k . If the pages are numbered and read consecutively, then how many pages have you read?

　　k - h

　　k - h + 2

　　k - h - 1

　　k - h + 1

答案：k-h+1，这道题考的是你的数学能力，从h页到k页一共是k-h页，但不要忘了加上一页，就是h页。