题目

  He knew it was wrong，but he said that on purpose.        Which of the following can replace the underlined phrase？         A. by accident        B.  by chance        C. on business         D. by design 答案：D小李有一本书，第一天看了全书的29，第二天看了全书的59，两天一共看了全书的几分之几？还剩下几分之几？