Forces must exist between the object and the incline that prevent the object from sliding.这个句子中，将定语从句放在句子末尾是为了保持句子平衡。
Forces must exist between the object and the incline that prevent the object from sliding.这个句子中，将定语从句放在句子末尾是为了保持句子平衡。
A.正确
B.错误
正确答案：正确