7.若对任意x∈R,(m-2)x2+4(2―m)x―4的值恒为负值,则m的取值范围为
A.(1, 2) B.(-∞,2) C.(1,2] D.(∞,2]
6.函数y=logax在x∈[2,+∞)上恒有|y|>1,则a的取值范围为
A.<a<2,且a≠1 B.0<a<或1<a<2
C. 1<a<2 D. a>2或0<a<
5.如果loga<1,那么a的取值范围是
A.(0,)∪(1,+∞) B.(, +∞)
C.(,1) D.(0,)∪(,+∞)
4.已知二次函数f(x)=ax2+2ax+1在区间[-3,2]上的最大值为4,则a的值为
A.-3 B.- C.3 D.-3或
3.设P=loga(a2+1), Q=loga(a3+1),a>0且a≠1,则P、Q的大小关系是
A.P>Q B.P<Q C.P=Q D.与a 有关
2.已知椭圆
的离心率 e=-
, 则m的值为
A.3 B.或3 C.
D.
或![]()
只有一项是符合题目要求的.
1.已知函数f(x)=loga x在[2,π]上的最大值比最小值大1,则a等于
A. B. C.或 D.不同于A、B、C答案
第三节 书面表达(满分25分)
请根据以下图表和提示,用英语写一篇关于我国居民手机拥有量变化的报告,并阐述手机给人们生活所带来的利与弊。
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As can be seen from the chart, great changes have been taking place in the ownership of mobile phones in China._________________________________________
_______________________________________________________________________
______________________________________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
第二节 根据下列句子的意思和空格中单词首字母补全单词。(共10句,每空0.5分,满分5分)
86. The price of vegetables v______________ from season to season.
87. Chunxi Street is the c _______________ center of Chengdu.
88. The c ______________ between different ethnic groups caused a series of wars.
89. It suddenly o ______________ to me that I might have been taken in by him.
90. Many countries highly v ______________ China’s role in keeping world peace.
91. Zhang Wuben exaggerated the quantity of ______________ (营养物质) contained in
beans and
garlic, causing their price to rise rapidly. ![]()
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92. Having lost a leg in the car accident, the girl remained ______________ (乐观的)
and tried to cheer up other patients in her room.
93. The CEO of the company has announced his ______________ (打算,意图) to retire.
94. Zhen He was the first Chinese to make a ______________ (航海,航行) around the
world.
95. His ______________ (鼓舞人心的) speech gave encouragement to all the audience
present.
第一节 短文改错(共10小题;每小题0.5分,满分5分)
此题要求改正所给短文中的错误。对标有题号的每一行作出判断:如无错误,在该行右边横线上画一个勾(√);如有错误(每行只有一个错误),则按下列情况改正:该行多一个词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。
该行缺一个词:在缺词处加一个漏字符号(^),在该行右边的横线上写出该加的词。
该行错一个词:在错的词下划一横线,在该行右边横线上写出改正后的词。
One day, I was cooking in the kitchen as the 76. _______
telephone rings. I went to answer it immediately. 77. _______
She was my close friend, Lisa. When we were talking 78. _______
on a phone, the fire alarm sounded. I ran back to the 79. _______
kitchen. The room full of smoke and the beef was badly 80. _______
burnt. I quickly turned off the gas, opening all the 81. _______
windows, and then went out of the house. In my 82. _______
surprise, two fire engines were outside my house. I 83. _______
was rather worried and told about the firemen that it 84. _______
was my careless cooking which caused the heavy smoke. 85. _______![]()
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