25. December 21st marks the _______ -- the first day of winter in northern hemisphere.
(A) equinox
(B) solstice
(C) sodium
(D) eclipse

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統計： A(28), B(59), C(24), D(23), E(0) #612070

祝大家順利上榜!

B3 · 2017/05/15

#2192196

the winter solstice 冬至

the summer solstice 夏至

the vernal equinox 春分

the autumn equinox 秋分

Tr. Kelly

B1 · 2015/03/29

#1020453

(A) equinox 春分
(B) solstice冬至

Aita Chung

B2 · 2015/05/23

#1067949

sodium 1

KK [ˋsodɪəm] DJ [ˋsəudiəm]

【化】鈉[U]

eclipse

KK [ɪˋklɪps] DJ [iˋklips]

【天】蝕[C]