题目

 We’re not suggesting that you should reach a permanent state called “happiness” and remain there. But there are many ways to keep away from anxiety, anger, frustration and sadness. Here are some ideas to get you started. Choose the ones that work for you. Practice mindfulness. Focus on the present. Instead of worrying about what you should do tomorrow while you’re having dinner with your family, focus on the here and now—the food, your families, the conversation. Sing along. Studies fine music activates parts of the brain that produce happiness. In one study, older adults who liste妈妈在蒸馒头时，开锅后改用“小火”。针对这种做法，下列说法中正确的是（    ） A．水沸腾后，改用“小火”能更快的让馒头变热 B．改用“小火”可以提高水的沸点 C．无论使用“大火”还是“小火”，水达到沸点后温度都保持不变 D．用“大火”可以提高水的沸点，不应该改用“小火”