Dictionaries say that “spring fever” is a lazy or restless feeling . People usually have

问题补充：

Dictionaries say that “spring fever” is a lazy or restless feeling . People usually have the feeling on the first warm day of spring. Everyone has probably felt it at one time or another . people have talked about it for years.

Recently, scientists have taken a good look at spring fever. What they found is quite surprising.

In many places we live in , the winter months often seem dark and dreary. When spring comes late March , the world becomes colorful . The number of daylight hours grows with each passing day. According to many scientists, all the sunlight sets off chemicals in the brain (大脑). The chemicals make our feeling change and bring on spring fever.

【小题1】How do people who have spring fever feel ?A．activeB．awake C．energeticD．restless .【小题2】Scientists think that cause(s) spring fever .A．colorsB．sunlightC．darkD．illness【小题3】 According to the passage ,the underlined word “dreary ”means“” in Chinese.A．沉闷的B．暖和的C．晴朗的D．明亮的【小题4】The best title for the passage is .A．How to Get Over Spring FeverB．Spring FeverC．Darkness in winterD．Spring and winterD

答案：

(答案→)D

解析：

【小题1】根据第一行 is a lazy or restless feeling 可知，春困是一种懒散的感觉。故选D。

【小题2】根据倒数第二行all the sunlight sets off可知，阳光促使大脑释放某种化学物质，导致春困。故选B。

【小题3】考查猜测词义。and连接两个相近的单词，根据dark可知，dreary与dark相近。冬天天看起来阴沉沉的。故选A。

【小题4】考查主旨大意。文章主要讲的是Spring Fever和产生的原因。故选B。