题目：[A] performance [B] health [C] heart [D] brain
[A] performance
[B] health
[C] heart
[D] brain
A [解析]由下一句“…does giving people breakfast improve performance．”知前后呈对比关系。
A [解析]由下一句“…does giving people breakfast improve performance．”知前后呈对比关系。
[A] performance [B] health [C] heart [D] brain
A [解析]由下一句“…does giving people breakfast improve performance．”知前后呈对比关系。