A.Britain has used up almost all coal deposits
B.the demand for British coal has declined
C.petroleum,water power,and electric power are replacing coal for many purposes
D.the old British mines are narrow and deep,making it difficult to sue machines fro mining.
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A.one-third
B.two-thirds
C.three-fifths
D.four-fifths
A.economic recession
B.economic expansion
C.economic decline
D.economic depression
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