Your dog needs at least 20 minutes of vigorous exercise every day.

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问题 Your dog needs at least 20 minutes of vigorous exercise every day.

选项 A、physical
B、energetic
C、regular
D、free

答案B

解析 划线词为形容词,意思是“精力充沛的”,与B项energetic(精力充沛的,有活力的)为同义词,又如:He is constitutionally energetic.他体质强健,精力充沛。A项意为“身体的”,例:Youth is the time of physical growth.青年时期是长身体的时期。C项意为“有规律的”.例:He leads a regular life.他过着有规律的生活。D项意为“自由的”,例:Everyone is free to express himself.每个人都可以畅所欲言。
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