单选题 The carelessness has some bad effects on his show.
A. scores B. results C. influences D. luck

【正确答案】 C

【答案解析】本题是对常见名词或名词短语的考查，have effect on是固定名词短语，意思是“对…有影响”。Effect影响；score分数；result，结果；influence影响；luck运气。