9.      He likes playing___ piano, he doesn't like playing____ football.
 A. the; the     B. the; /   C. /; the    D. /; /

10.   She is _____ newcomer to _____ chemistry, but she has already made some important discoveries. 
 A. the;  the   B. the; /  C. a;  /   D. a; the

11.   【2012安徽】Carl is studying     food science at college and hopes to open up      meat processing factory of his own one day.
A. /；a   B. /；the   C. the; a   D. the; the

考点5.     by+名词表示交通方式时，名词前不要冠词，名词也不用复数

by car     by bus   by bike   by train   by air   by sea  by land

12.   【2005 全国】 If you go by _____ train , you can have quite a comfortable journey , but make sure you get ____ fast one .
A. the; the    B. /; a   C . the; a  D. /;  /

13.   Mr. Black will go back to England______.
A. by air  B.by a plane  C. by trains  D. at a train

14.   【2008江苏】 We went right round to the west coast by ____ sea instead of driving across ____ continent.
A. the; the                 &nb

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