题目内容

【题目】学习地球自转时,同学们开展了一系列活动。读图,回答下面小题。

1用灯泡模拟太阳,用地球仪观察昼夜现象,需要选择的是

A. B. C. D.

2演示地球自转,正确的做法是

A. 面向地球仪,自左向右拨动地球仪

B. 将地球仪垂直放在桌面上

C. 地轴的指向有规律的发生变化

D. 移动地球仪沿椭圆轨道做水平运动

3演示结束后,同学们分别绘制了地球自转示意图(如图),其中最合理的是

A. B. C. D.

【答案】

1D

2A

3B

【解析】人们根据地球的大小,按一定的比例缩小成一个模型就成了地球仪,地球自转的方向是自西向东,太阳直射点会在南北回归线之间来回移动。

1用灯泡模拟太阳,用地球仪观察昼夜现象,需要选择的是不透明球体,才能体现昼夜现象,故选D。

2演示地球自转,面向地球仪,自左向右拨动地球仪;将地球仪斜放在桌面上;地轴的指向保持不变;地球仪保持不动,故选A。

3地球在自转时,面向太阳这一面是昼半球,背向太阳这一面是夜半球,昼半球与夜半球的分界线与太阳光垂直,故选B。

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【题目】

Wang Fuman is a 10-year-old student. He is now studying in

Zhuanshanbao Primary School in Zhaotong, Yunnan Province. On Monday morning (January 8, 2018), he braved -9 weather to travel over an hour to reach his school.

When he arrived, his hair and eyebrows had been completely frozen with snowflake (雪花). This made his 16 classmates laugh a lot. Fu Heng,

Wang’s teacher saw this and took a picture. He uploaded (上传) Wang’s picture. The picture soon has got much attention to children from poor families in the countryside. Wang, who has been

nicknamed “Snowflake Boy” by netizens, became famous online overnight. By Wednesday morning, his picture had been “liked” more than 260,000 times on Sina Weibo and shared more than 40,000 times.

After hearing Wang’s story, the Yunnan China Youth Development Foundation held a public donation ( 捐赠) activity for children from poor families. The Foundation has promised to

give each poor child 500 yuan ($75) to help them stay warm in winter.

By 1 pm on Wednesday, the Foundation had collected about 300,000 yuan in public donations, according to their website. Wang’s village now has electricity and tap water, “…and

my family is getting help to build a new house close to the school”, Wang said, “I think our life will get better.”

1What was the weather like on Monday morning?

A. Snowy and cold. B. Rainy and cold. C. Snowy but warm. D. Rainy but warm.

2Why did the classmates laugh when Wang entered the classroom?

A. Because he lost his books . B. Because he told a joke.

C. Because he looked funny. D. Because he was late.

3The Foundation held a public donation to help the poor children .

A. stay happy B. keep healthy

C. stay educated D. keep warm in winter

4What can we know from the text?

A. Zhaotong’s weather in winter is warm.

B. Wang’s future life may become better.

C. Wang’s village had electricity before.

D. Few people shared the boy’s picture.

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