[题目]2011年9月29日21时16分3秒.天宫一号在酒泉卫星发射中心发射升空.至20 11年10月6日18时.天宫一号已绕地球飞行l09圈.据此完成下列各题.[1]“天宫一号发射时地球公转的速度( ).A．由快变慢 B．由慢变快 C．接近最快 D．接近最慢 [2]“天宫一号发射时.太阳直射点的纬度位置和移动方向是( ).A．在北半球并向北移动题目和参考答案——青夏教育精英家教网—

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【题目】2011年9月29日21时16分3秒，天宫一号在酒泉卫星发射中心发射升空。至20 11年10月6日18时，天宫一号已绕地球飞行l09圈。据此完成下列各题。

【1】“天宫一号”发射时地球公转的速度( )。

A．由快变慢 B．由慢变快

C．接近最快 D．接近最慢

【2】“天宫一号”发射时，太阳直射点的纬度位置和移动方向是( )。

A．在北半球并向北移动 B．在北半球并向南移动

C．在南半球并向北移动 D．在南半球并向南移动

【答案】

【1】B

【2】D

【解析】

试题分析：

【1】“天宫一号”于2011年9月29日发射，故地球的公转运动正由远日点逐渐向近日点运动过程中，故公转速度逐渐加快，所以B正确。

【2】“天宫一号”于2011年9月29日发射，刚过秋分日9月23日，故太阳直射点位于南半球并向南移，所以D正确。

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