-- You are always full of . Can you tell me the secret?
-- Taking plenty of exercise every day.
A. power
B. strength
C. force
D. energy
网友回答
A. power
B. strength
C. force
(答案→)D. energy
解析：考查名词：A. power权力B. strength体力C. force武力，暴力，D. energy精力，be full of energy“精力充沛“，句意是：你总是精力充沛，你能告诉我秘密吗？--每天大量的运动。选D。