A．In 1585.B．In 1584.C．In 1583.D．In 1586.

A．In 1636.B．In 1638.C．In 1836.D．In 1782.

A．In 1987B．In 1986C．In 1985D．In 1984

A．In 1928.B．In 1982.C．In 1980.D．In 1920.

A．In 1980.B．In 1986.C．In 1991.D．In 2000.

A．In 1585.B．In 1584.C．In 1583.D．In 1586.

【C6】A．In factB．In additionC．In generalD．In theory