四川省南充市高考英语二轮复习 阅读理解寒假训练（19）

阅读理解寒假训练（19）阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。Our body clock，or natural body rhythm，influences our

阅读理解寒假训练（19） 阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。 Our body clock，or natural body rhythm，influences our energy and alertness．Paying attention to it can help us choose the suitable time of day when we best perform specific tasks． The reality，however，is that most of us organize their time around work demands，school deadlines，commuting or social events．Doing whatever your body feels like doing is aluxury in today's fast-paced modem society． But that doesn't mean it isn't worth trying．Obeying our body clock has significant health benefits．Disrupting our natural body rhythm，on the other hand，has been linked to problems such as depression，obesity，or headache，says Steve Key，a biology professor． When the body clock can synchronize（使……同步）the rhythms of its natural processes，it “gives us an advantage in daily life”，says Key． According to him，when it comes to cognitive（认知的）work，most adults perform best in the late morning．As our body temperature starts to rise just before awakening in the morning and continues to increase until midday，our memory，alertness and concentration gradually improve． However，he adds，our ability to concentrate typically starts to decrease soon thereafter．Most of us are more easily distracted（分心）between noon and 4 pm． Alertness also tends to fall after eating ameal and sleepiness tends to peak around 2pm，making that agood time for anap． Surprisingly, tiredness may increase our creative powers．For most adults， problems that require open ended thinking are often best dealt with in the evening when they are tired， according to astudy in the journal Thinking & Reasoning． When choosing atime of day to exercise，paying attention to your body clock can improve results．Physical performance is usually best from about 3to 6pm， 1