问题 选择题

地球公转时,地轴始终是保持倾斜的,其北端始终指向

A.北极星

B.火星

C.土星

D.太阳

答案

答案:A

题目分析:地球公转时,公转轨道是个椭圆轨道,而且地轴倾斜的方向不变,北极点永远指向北极星附近。火星、土星是行星,太阳是距离地球最近的恒星。所以本题A为正确选项。

点评:地球在绕太阳公转过程中,自转轴对地球轨道面是倾斜的。由于地轴与赤道平面是垂直的,地轴与地球轨道面交角是23°26′。地球无论公转到什么位置,这个倾角是保持不变的。在地球公转的过程中,地轴的空间指向在相当长的时期内是没有明显改变的。北极指向北极星附近。而火星、土星是行星,太阳是距离地球最近的恒星。通过比较,掌握地球公转特征。

阅读理解

BEIJING---Chinese Premier Wen Jiabao has visited the“left-behind” children whose parents are working in cities before Children’s Day.

During a visit to northwest China’s Shanxi Province, Wen visited the home of Yang Saike, a primary school boy in a village of Xingping City, Yang, whose parents were working in Fujian, thousands of kilometers away, was cared for by his grandparents. His parents fail to go home even once a year.

The premier held Yang in his arms and looked through his exercise books and praised him for his hard work. (83) Wen talked with many children and asked them many questions about their schooling and life.“ You are so pretty,” Wen said to Liu Mengqi, a seven-year-old girl living with her grandmother. Liu’s parents were also working in the city.

“Have you been to school yet?” Wen asked two other girls.

“ We are going to the pre-school class,” said one.

“ Mon and dad at home?” Wen asked. The children shook their heads.

“ Children cannot see their parents very often, which is a new problem in the countryside. We should give them more care and love,” said the premier.

(84) “ With fast economic(经济)development, more people in the country chose to work in cities and left their children with grandparents or relatives back home”,said Wen. The premier asked local governments to do something to protect and care for such children at home and free their parents in cities from worries about their children.

A. 根据短文内容简要回答问题。

小题1:What questions did Wen Jiaobao ask the children in the countryside?

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小题2:What did the premier ask local governments do?

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B. 将短文中划线的句子译成汉语。

小题3:_______________________________________________________________                    

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C. 请给短文拟一个适当的标题。

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单项选择题