单项选择题
A.努(nǔ)力 B.呻(sēn)吟 C.降落(luò)
A.1946 B.1947 C.1948
A.胶济铁路 B.荣乌铁路 C.日兰铁路
A.Please stop here B.Do not forget to take your luggage C.Please fasten your seat-belt
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