题目

In fact, more than one account suggests that________. A . there, on no account, is proof that the falling apple hit Newton on the head B . on no account should there be proof whether the falling apple hit Newton on the head C . on no account is there proof whether the falling apple hit Newton on the head D . there, on no account, should be proof that the falling apple hit Newton on the head 答案：A当 A. 最大值为1，最小值为-1     B. 最大值为1，最小值为 C. 最大值为2，最小值为    D. 最大值为2，最小值为