题目内容：
Criticism and self-criticism are necessary __________they may help us to find out and correct our mistakes.
A.by that? ?
B.at that
C.on that? ?
D.in that
参考答案：
答案解析：
选择题：Criticism and self-criticism are necessary __________they may help us to find ou
- 题目分类：教师资格
- 题目类型：选择题
- 查看权限：VIP