11.The food is insufficient for three people.
A scarce
B short
C marginal
D inadequate
12.Most of the butterflies perish in the first frosts of autumn.
A die
B disappear
C migrate
D vanish
13.But ultimately he gave in.
A undoubtedly
B certainly
C finally
D necessarily
14.It is a complicated problem.
A strange
B complex
C difficult
D unusual
15.In Britain and many other countries appraisal is now a tool of management.
A evaluation
B production
C efficiency
D publicity
參考答案：11.D 12.A 13.C 14.B 15.A
A scarce
B short
C marginal
D inadequate
12.Most of the butterflies perish in the first frosts of autumn.
A die
B disappear
C migrate
D vanish
13.But ultimately he gave in.
A undoubtedly
B certainly
C finally
D necessarily
14.It is a complicated problem.
A strange
B complex
C difficult
D unusual
15.In Britain and many other countries appraisal is now a tool of management.
A evaluation
B production
C efficiency
D publicity
參考答案：11.D 12.A 13.C 14.B 15.A