题目内容

【题目】数九又称冬九九，是一种汉族民间节气。数九从每年冬至开始，每九天算一“九”，一直数到“九九”八十一天，“九尽桃花开”，天气就暖和了。据材料完成下列各题。

【1】

A. 赤道与北回归线之间；向北移

B. 赤道与北回归线之间；向南移

C. 赤道与南回归线之间；向北移

D. 赤道与南回归线之间；向南移

【2】

A. 昼长夜短，且昼长变长

B. 昼短夜长，且昼长变短

C. 正午太阳高度角不断变小

D. 日出时间不断提前

【答案】

【1】C

【2】D

【解析】试题分析:

【1】从冬至日12月22日开始，经历81天，不到三个月，因此不到3月21日，太阳直射点在赤道以南，且向北移，选C项。

【2】数九期间，太阳直射点在南半球，向北移，我国北方昼短夜长，昼长变长， A、B错。正午太阳高度角不断变大，C错；日出时间不断提前，D对。

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