Question

【题目】There are _____ floors in my house and my bedroom is on the _____ floor.
A.twelfth; ninth
B.twelve; ninth
C.twelve; nineth
D.twelfth; nineth

Answer 1

【答案】B
【解析】句意：我家有12层楼，我的卧室,9楼.结合语境可知前一空表示数量，故用基数词。后一空表示顺序，故用序数词。结合语境，所以答案是B。