There is no known cure for SARS, but doctors are developing ways to help sufferers ______ it.

A．During the 1970's, old buildings in many cities were recycled for modern use.
B．Recent interest in ecology issues has led to the cleaning up of many rivers.
C．The San Antonio example shows that bulldozers ate not the way to fight urban decay.
D．Strong government support has made adaptive rehabilitation a reality in Boston.

A．In the eighteenth century.
B．In the early nineteenth century.
C．In the late nineteenth century.
D．In the early twentieth century.