15.   ____ trains are faster than ____ buses.
A. /; /    B. The; /    C. /; the     D. The; a
16.   【2012江西】The Smiths don’t like staying at         _____ hotels, but last summer they spent a few days at a very nice hotel by ________ sea.
A./; a  B.the; the      C./; the  D.the; a
17.   ___ is known by its note,___ is known by his talk.
A. A bird/a man             B. One bird/one man    
C. The bird/the man        D. Bird/man
18.   【2011全国I】 It is generally accepted that _____ boy must learn to stand up and fight like____ man. 
A. a; a   B. a; the    C. the; the   D. a; 不填
19.   In 
A. the; a    B. a; /   C. the; the    D. a; the
 
 
 
