9.Hearing problems may be alleviated by changes in diet and exercise habits．
A removed B cured
C treated D lessened
10 The conclusion can be deduced from the premises
A gone B derived
C done D come
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
参考答案：CABCB AABDB DACBA