Question

【题目】The word “day” has two meanings. When we talk about the number of days in a year, we are using “day” to mean 24 hours. But when we talk about day and night, we are using “day” to mean the time between sunrise and sunset. Since the earth looks like a ball, the sun can shine on only half of it at a time. Always one half of the earth is having day and the other half night. A place is moved from day into night and from night into day over and over by the spinning（旋转）of the earth. At the equator（赤道）day and night are sometimes the same length（长度）. They are each twelve hours long. The sun rises at 6 o’clock in the morning and sets at 6 o’clock in the evening. For six months the North Pole is tilted（倾斜）toward the sun. In those months the Northern Hemisphere（半球）gets more hours of sunlight than the Southern Hemisphere. Days are longer than nights. South of the equator nights are longer than days. For the other six months the North Pole is tilted away from the sun. Then the Southern Hemisphere gets more sunlight. Days are longer than nights. North of the equator nights are longer than days. Winter is the season of long nights. Summer is the season of long days.

【1】 When the Western Hemisphere is having day, the eastern Hemisphere is having ___________.

A. both day and night B. day

C. neither day nor night D. night

【2】A place is moved from day into night and from night into day over and over by _________ of the earth.

A. the pushing B. the pulling

C. the spinning D. the passing

51. 【3】When the North Pole is tilted toward the sun, the Northern Hemisphere gets _______sunlight.

A. less B. more C. all D. No

Answer 1

【答案】

【1】D

【2】C

【3】B

【解析】

试题分析：这篇短文主要介绍了天有两层含义，白天黑夜的形成及其形成原因。

【1】D细节理解题。根据Since the earth looks like a ball, the sun can shine on only half of it at a time. Always one half of the earth is having day and the other half night.可知由于地球看起来像个球，太阳一次只能照到它的一半。总是有一半的地球是白天，另一半的夜晚。故选D。

【2】C细节理解题。根据A place is moved from day into night and from night into day over and over by the spinning(旋转) of the earth.。可知一个地方从白天到晚上，从晚上到白天是通过地球的旋转。故选C。

【3】B细节理解题。根据For six months the North Pole is tilted(倾斜) toward the sun. In those months the Northern Hemisphere(半球) gets more hours of sunlight than the Southern Hemisphere.可知六个月的北极倾斜向太阳。在这几个月北半球（半球）会比南半球得到更多的阳光。白天比黑夜长。故选B。