单项选择题

The economy grew at its fastest rate since 1980 owing to a boom in world trade.（）

A．a birth
B．an improvement
C．a beginning
D．an increase

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单项选择题
Steps must be taken to reduce administration costs.（）

A．government
B．management
C．organization
D．instruction
单项选择题
In theory, the journey ought to take three hours, but in practice it usually takes four because of roadworks.（）

A．Factually
B．In fact
C．Theoretically
D．In practice
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