—How lovely these children are!—YeahThey memories of my childhood．A. called outB. called

问题补充：

—How lovely these children are!

—Yeah．They memories of my childhood．

A. called out

B. called for

C. called up

D. called on

答案：

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。