问题
选择题
—The problem isn't difficult for the children to work out, is it？
—_____ . Perhaps they should have been given a more difficult one.
A．Yes, it is
B．Yes, it isn't
C．No, it is
D．No, it isn't
答案
答案：D
从后句可知,“本应该给他们一道更难的题”暗示原来所给的题不难,故答案是“不难”,但由于问句用的是否定形式,所以应用No, it isn't.