39 Students can get to know the moon’s features better by observing the _________surface through telescopes.
(A) civil
(B) grave
(C) lunar
(D) tasty

A) civil（市民的；文明的；民用的）
1. The country is working hard to protect civil rights.
（這個國家努力保護公民權利。）
2. Please stay civil during the discussion, even if you disagree.
（即使意見不同，也請保持文明。）
3. The engineer is an expert in civil engineering.
（那位工程師是土木工程專家。）

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(B) grave（嚴重的；墳墓）
1. The doctor said the patient was in grave danger.
（醫生說病人處於嚴重的危險中。）
2. Pollution has become a grave problem for the environment.
（汙染已成為環境的嚴重問題。）
3. He visited his grandfather’s grave every year.
（他每年都去祖父的墳墓掃墓。）

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(C) lunar（月亮的；月球的） ✅ 正解
1. Astronauts walked on the lunar surface.
（太空人踏上了月球表面。）
2. A lunar eclipse will occur tomorrow night.
（明晚將發生月蝕。）
3. The Chinese New Year is based on the lunar calendar.
（農曆新年是依照農曆來計算的。）

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(D) tasty（美味的）
1. The pizza was so tasty that we ordered another one.
（披薩太好吃了，我們又點了一個。）
2. She made a tasty soup with fresh vegetables.
（她用新鮮蔬菜煮了一鍋美味的湯。）
3. This restaurant is famous for its tasty desserts.
（這間餐廳以美味的甜點聞名。）