【題目】How sad! __________ Ethiopian Airlines（埃航） plane crashed shortly after takeoff, killing all on board __________ the morning of March 10, 2019 local time.

A. A; onB. An; onC. A; inD. An; in

【答案】B

【解析】

句意：多傷心�。‘�?shù)貢r間2019年3月10日上午，埃塞俄比亞航空公司的一架飛機在起飛后不久墜毀，機上所有人員全部遇難。考查不定冠詞和時間介詞。Ethiopian [iθipin]：埃塞俄比亞的，元音音素開頭，可知使用冠詞an；在具體的某一天或某一天的早上、中午、晚上使用介詞on，故“2019年3月10日上午”使用介詞on。所以答案是B。

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