It sounds like a good plan, but there are some difficulties in carrying it out.
A. practiced
B. practical
C. practice
D. practicing
网友回答
A. practiced
(答案→)B. practical
C. practice
D. practicing
解析：本题考查词性。根据题意可知此处应用形容词，practical表示实际的。句意：听上去是个好计划，但是实施起来却有现实困难。