(II)求函数的最小值.
(I)解不等式;
2.(2007海南、宁夏卷理22)设函数.
【答案】6;
【解析】.由得,则,得
1.(2007广东卷理14)设函数,则 ;若,则的取值范围是 .
9.(97)medicine A. except B. record C. increase D. physics
10(96)longer A. London B. prove C. lock D. lonely
11(98)anxious A. branch B. conclusion C. dangerous D. tongue
12(05II)official A.concert B.century C.coast D.ocean
13(06II)honest A. husband B. habit C. hour D. host
14(99)gentle A. organize B. bargain C. regular D. charge
15(97)oxygen A. geography B. degree C. recognize D. sugar
16(99)spare A. fear B. earn C. pear D. beard
17(99)journey A. merchant B. courtyard C. energy D. serious
18(98)breathe A. health B. deaf C. increase D. pleasure
19(06II)enough A. shout B. touch C. soul D. mouth
20(05II)south A.courage B.soup C.southe D.trousers
21(05II)surprise A.performance B.further C.work D.nurse
22(05II)smooth A.feather B.tooth C.thief D.warmth
23(96)third A. southern B. weather C. thus D. theory
24(96)Christmas A. speech B. stomach C. charge D. church
25(98)achieve A. research B. chemist C. technique D. stomach
KEYS:
1-5: ABBBA 6-10: ABDAC 11-15: DDCDA
16-20: CACBD 21-25: AADBA
(注:由于笔者打不出新国际音标,音标部分为旧国际音标)
8.(97)canal A. important B. liberation C. majority D. national
7.(97)motor A. opposite B. ocean C. oppress D. object
6.(96)Advanced A. task B. fortunate C. entrance D. salute
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