—How lovely these children are!
—Yeah．They memories of my childhood．
A. called out
B. called for
C. called up
D. called on
网友回答
A. called out
B. called for
(答案→)C. called up
D. called on
解析：call out“出动, 向…叫喊”， call for “需要，要求”， call up“召集, 使想起, 提出, 打电话给”， call on“号召, 呼吁, 约请, 访问”。此句意思是“他们引起了我对童年的回忆。”因此选C。