have tried recycling to reduce the cost of trash disposal.

　　（A） Because paper of all kinds is the biggest single component of municipal trash， many municipalities have tried recycling to reduce the cost of trash disposal.

　　（B） Because paper of all kinds is the biggest single component in municipal trash， many

　　municipalities tried to recycle so that the cost of trash disposal is reduced.

　　（C） Because paper of all kinds are the biggest single components in municipal trash， many

　　municipalities have tried to recycle to reduce the cost of trash disposal.

　　（D） All kinds of paper are the biggest single components of municipal trash， and so many

　　municipalities have tried recycling to reduce the cost of trash disposal.

　　（E） All kinds of paper is the biggest single component of municipal trash， so many municipalities

　　have tried to recycle so that the cost of trash disposal could be reduced.

　　14. As rare as something becomes， be it a baseball card or a musical recording or a postage stamp， the more avidly it is sought by collectors .

　　（A） As rare as something becomes， be it

　　（B） As rare as something becomes， whether it is

　　（C） As something becomes rarer and rarer， like

　　（D） The rarer something becomes， like

　　（E） The rarer something becomes， whether it is

　　15. Psychologists now contend that the way adults think and feel are determined as much by their peers

　　in early childhood than by their parents.

　　（A） are determined as much by their peers in early childhood than by their

　　（B） are determined as much by peers in early childhood as do their

　　（C） is determined as much by their early childhood peers as by their

　　（D） have been determined by childhood peers as much as their

　　（E） was determined as much by one's peers in childhood as by one's

　　16. Migraine， the most debilitating common form of headache， afflicts perhaps 18 million Americans，

　　who collectively lose 64 million workdays a year， and they cost the nation $50 billion in medical

　　expenses and lost work time.

　　（A） year， and they cost the nation $50 billion in medical expenses and lost

　　（B） year and thus cost the nation $50 billion in medical expenses and lost

　　（C） year， so as to cost the nation $50 billion in medical expenses and lost

　　（D） year that costs the nation $50 billion in lost medical expenses and

　　（E） year， which thus cost the nation $50 billion in lost medical expenses and