to light for a long time, the potatoes turned green.
A. Introduced to
B. Exposed to
C. Linked to
D. Connected to
网友回答
A. Introduced to
(答案→)B. Exposed to
C. Linked to
D. Connected to
解析：考查短语辨析。Introduced to介绍给，Exposed to暴露于，Linked to 联系，. Connected to与什么联系。句意：长时间暴露于光下，土豆会变绿。所以选B。