A-A+
A．It increased the students' white blood cell
问题详情
A．It increased the students" white blood cell count.
B．It increased some students" energy level.
C．It improved the students" ability to play musical instruments.
D．It released a natural painkiller in some students" bodies.
参考答案
正确答案：D
解析：预览选项可知，本题考查音乐对学生的影响，It指的是music。文中提到了另一项有关音乐和大脑之间的关系的实验，对实验结果的描述…showed a large increase in endorphin，a natural pain reliever表明音乐可以起到一种天然镇痛剂的作用，选项D与此相符，为本题答案。
