单选题 In the second half of the 19th century many great inventions were made.

【正确答案】 B
【答案解析】[精解] 在十九世纪下半叶,有了很多重大发明。要点是:the second half of the 19th century意思是“十九世纪后半阶段”,即“十九世纪下半叶”;make inventions指“进行发明”的意思,与题中被动语态意思相符。