问题
选择题
赤道平面与黄道平面的夹角为 （ ）
A．15°
B．23°26′
C．66°34′
D．90°
答案
答案：B
题目分析：黄道面与赤道面的交角即黄赤交角，由于地球公转过程中，地轴与黄道面成66°34'的交角，故黄赤交角为23°26'。
点评：本题难度低，学生只要掌握黄赤交角的度数，知识性试题。
搜题请搜索小程序“爱下问搜题”
赤道平面与黄道平面的夹角为 （ ）
A．15°
B．23°26′
C．66°34′
D．90°
答案：B
题目分析：黄道面与赤道面的交角即黄赤交角，由于地球公转过程中，地轴与黄道面成66°34'的交角，故黄赤交角为23°26'。
点评：本题难度低，学生只要掌握黄赤交角的度数，知识性试题。
| 阅读理解。 | ||||||
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| 1. In ancient Egypt, people cleaned their teeth with their _____. | ||||||
| A. toothbrushes B. fingers C. modem toothpaste | ||||||
| 2. The FIFA was founded in _____. | ||||||
| A.1895 B.1872 C.1904 | ||||||
| 3. The banker who had made enough money bought _____. | ||||||
| A. three large farms B. the world's smallest piano C. a kind of powdered egg shells | ||||||
| 4. From the passages, we know _____ has rich Vitamin C and Vitamin E. | ||||||
| A. the popcorn B. the egg C. the kiwi fruit | ||||||
| 5. How many ball games are mentioned in the passages above? | ||||||
| A. Three. B. Four. C. Five. |