单项选择题

Most of the older civilizations which flourished during the fifth century B.C.are died out（）.

A．they have died out
B．has died out
C．have died out
D．they had died out

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单项选择题

Depression that inflicts people who believe their lives lack content when the rush of the busy week stops referred to by a prominent psychiatrist as Sunday Neurosis（）.

A．has been referred to by a prominent psychiatrist
B．has been referred to as by a prominent psychiatrist
C．a prominent psychiatrist has referred to it
D．it has been referred to by a prominent psychiatrist

单项选择题

His heavy drinking and fond of gambling makes him a poor role model（）.

A．and fact that he gambles
B．and that he gambles
C．and he gambles which
D．and gambling