问题补充:
There are floors in my house and my bedroom is on thefloor.
A. three; two
B. three; second
C. two; third
D. second; three
答案:
A. three; two
(答案→)B. three; second
C. two; third
D. second; three
解析:句意:我家有……层楼,我的卧室在……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.结合语境可知选B.