A、 How to improve your reasoning ability.
B、 Why classical music is popular with math students.
C、 The difference between classical music and rock music.
D、 The effects of music on the results of math tests.

【正确答案】 D

【答案解析】解析：题目询问文章的主旨是什么。关键是要听到文章开头的三句话，由此可知D正确。主旨类题考查考生对短文的主题或主旨大意的概括理解，一般出现在短文的第一题或者最后一题。

A、 Because it keeps you calm.
B、 Because it strengthens your memory.
C、 Because it stimulates your nerve activity.
D、 Because it improves your problem-solving strategies.

【正确答案】 C

【答案解析】解析：题目询问为什么古典音乐能够在解决问题的过程中起到积极作用。关键是要听到“(古典)音乐似乎刺激大脑里的神经活动”。故选C。符合短文听力“听到什么选什么”的原则。

A、 The effects of music do not last long.
B、 Piano music could interfere with your reasoning ability.
C、 Music, whether classical or rock, helps improve your memory.
D、 The more you listen to music, the higher your test scores will be.

【正确答案】 A

【答案解析】解析：题目询问研究的发现之一是什么。关键是要听到“你应该记住，刺激大脑的效果只能持续10—15分钟。”故A正确而D错误。B中的Piano music应改成The less complex music，C未提及。