高中英语语法填空天天刷 第02篇

You may wonder why we have a holiday in summer (1) _________ winter, but not in spring (2)__________ autumn. There are some reasons (3)__________it. Like most people, your intelligence（智力）changes from season to season. You are properly a lot sharper in the spring (4)___________ you are (5)___________ any other time of the year. Ellsworth Huntington, who’s well known to us all concluded from other men’s work and his own among people in different climates that climate and temperature have a clear effect  (6)___________ our intelligence. He found that cool weather is far better for creative thinking than warm weather. This  (7)____________ mean that all people are not  (8)____________ quick at learning in the summer as they  (9)____________ during the rest of the year. It tells us, (10)___________, that intelligence of large numbers of people seems to be lowest in the summer.