单选题 Diderot was also a philosophical materialist,______ that thought developed from the movements and changes of matter.
A. believing B. have been located
C. believes D. be locating

【正确答案】 A
【答案解析】这道题测试句子结构知识。believing是现在分词,其余三个选项插入句中都会出现严重的句子结构错误,B和D还会引起句义混乱。