Because adults have reached full growth, they probably. One good way to get vitamin D is to.

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问题 Because adults have reached full growth, they probably__________.
One good way to get vitamin D is to__________.

选项 A、sleep with your windows open
B、play in the sunshine
C、eat plenty of fresh vegetables
D、take some medicine

答案B

解析从文章第二段第二句：It forms when the skin is exposed to the sun．得知。故本题答案为B。

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公共英语二级笔试

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