The underlined word" drawbacks" means______.

A．make complete new roles in every area of International trade
B．have more members and settle more problems
C．take the place of the World Bank and the International Monetary Fund
D．have new roles covering trade in services and intellectual property

A．A writer's success depends on luck rather on effort.
B．Real writers often find their work interesting and rewarding.
C．Famous writers usually live in poor condition.
D．The chances for a writer to become successful are small.