Question

【题目】There are ______ floors in the building and my home is on the ______ floor.
A.twenty; fifteenth
B.twenty; fifteen
C.twentieth; fifteen
D.twentieth; fifteenth

Answer 1

【答案】A
【解析】句意：这栋建筑物有二十层，我们家在第十五层上。此题考查基数词和序数词，根据句意，应选A。