children believe they can succeed they will never become totally independentA. IfB. Thou

问题补充：

children believe they can succeed, they will never become totally independent．

A. If

B. Though

C. Unless

D. When

答案：

A. If

B. Though

(答案→)C. Unless

D. When

解析：

这题考查连词的用法：句意是：如果孩子不相信他们会成功，他们就不会完全独立，unless“除非，如果不”，符合句意。选C。