问题补充：
When the baby was crying, she started singing to him and was with a smile.
A. rewarded
B. awarded
C. prized
D. valued
答案：
(答案→)A. rewarded
B. awarded
C. prized
D. valued
解析：词义辨析。A. 报酬；奖励 B. 授予；判定 C. 珍视；估价 D. 评价；重视。句意：当这个婴儿哭时，她开始为他唱歌，得到孩子一个微笑的回报。be rewarded with得到……的奖赏。故选A。
