小题1:important yourself/yourselves
小题2:You/We should pay attention to the most important things about it.
小题3:为了你的记忆力正常进行，健康的食物和大量的维他命是必需的。
小题4:Being tired will stop you from being able to think clearly and well.
小题5:There are many things you can do to improve your memory.