The vitamins necessary for a healthy body are normally supplied by a ______ of fruit and green vegetables.

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问题 The vitamins necessary for a healthy body are normally supplied by a ______ of fruit and green vegetables.

选项 A、variety
B、fraction
C、section
D、series

答案A

解析 短语辨析题。a variety of“各种各样的”;a fraction of “一小部分的、一小撮的”;a section of“一部分”;a series of“一系列的”。根据句意,A为正确答案。句意:人体所需要的维生素通常由各种各样的水果和绿色蔬菜提供。
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