题目内容
（请给出正确答案）
[单选题]
以下哪个不是用于论证的常用句型
A.Our study has verified that this method is
B.We intend to do justice to the question of
C.Let me cite a few instances to illustrate my point
D.This is only my opinion but.
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A.I’m afraid I can’t accept your argument
B.I’m not at all convinced by your explanation.
C.I strongly hold the viewpoint that
D.Last year during the Spring Festival, I
