高中题库

[试题]（Ⅱ）求sinA＋sinB的最大值．

[试题]（19）（本题满分14分）设a1，d为实数，首项为a1，z差为d的等差数{an}的前n项和为Sn，满足S5S6＋15＝0．（Ⅰ）若S5＝5．求S6及a1;

[主观题]（15）若正实数x,y满足2x+y+6=xy，则xy的最小值是 ．

[试题]（Ⅱ）设M为线段DE的中点，求直线FM与平面A′DE所成角的余弦值．

[主观题]（16）某商家一月份至五月份累计销售额达3860万元，预测六月份销售额为500万元，七月份销售额比六份递增x%,八月份销售额比七月份递增x％,九、十月份销售总额与七、八月份销售总额相等．若一月至十月份销售总额至少达7000万元，则x的最小值是 ．

[试题]第三节 书面表达 假定你是李华。你们学校和一所美国中学签署了教师交流协议。在过去的一年里，你们的英文老师是来自这所中学的Sue Wood。不久前她返回美国任教。请你根据写作要点和要求给Sue写封电子邮件。写作要点：1.对她表达感谢之意;2.介绍她离开后你自己及班里发生的事情;3.希望了解她的近况。要求：1.短文须写在答题卡的指定区域。2.短文词数不少于100（不含已写好的部分）。3.内容充实，结构完整，语意连贯。4.书写须清晰、工整。5.邮件中不能体现本人真实信息。

[主观题]I have been ---------（深深地）impressed by a number of experiences in her life.

[主观题]Mr. White has been --------（缺席的）from work for days, so he knows nothing about our new plan.

[主观题]The local government is ----------（讨论）how to help the poor in the countryside.

[主观题]The teacher is glad that everyone in her class---------(渴望的)to learn.

[主观题]Miss Harper closed her eyes and----------（假装）to be asleep.

[主观题]When things aren’t going well, my parents always ---------（鼓励）me, telling me not to give up.

[主观题]Jeff has --------(习惯)of listening to music while reading.

[主观题]We sat chatting for a few --------(分钟)after finishing our meal.

[主观题]H．e tried to--------（解释）,but she wouldn’t listen.

[单选题]A．ccording to Paragraph 3,who is the final victim of spam? [ ]A． The businessB． The advertiserC．The employeeD．The consumer

[单选题]What is happening when we give gifts? Most important, we are exchanging gifts. If someone gives me a gift for my birthday, I know that I am usually expected to give one on his or her next birthday. A gift builds up or confirms a social oblingation（义务

[单选题]G．ifts tighten personal relationships and provide a means of communication between loved ones. People say that a gift lets the recipient（接受者） know we are thinking of them, and that we want to make the person “feel special.”We want people to feel want

[主观题]第一节 单词拼写 根据下列各句句意和空白之后的汉语提示词，在答题卡指定区域的横线上写出对应单词的正确形式，每空只写一词。66.The car is running at a --------(速度)of eighty kilometers an hour.

[单选题]E．motions(情感)like these suggest that a positive spirit still lies behind gift giving. They prove that the anthropologist Claude Levi-Strauss was wrong to say that modern western gift giving is highly wasteful. Studies in Canada and elsewhere have als

[单选题]D．When I first got an email account ten years ago, I received communications only from family,friends,and colleagues.Now it seems that every time I check my e-mail ,I have an endless seriers of advertisement and otner correspondence that do not inter

[单选题]What does the underlined word “correspondence” in the Paragraph 1 probably mean? [ ]A．messagesB．ideasC．connectionsD．programs

[单选题]A．ccording to the text, what is the major cause of the flooding spam? [ ]A．Companies rely on e-mail for communications.B．More people in the world communicate by e-mail.C．Many computer viruses contain spam e-mail.D．More advertisers begin to promote sa

[单选题]People tend to talk about presents in a fairly loving way. A woman whose mother had died years ago described the many gifts around her house.These were gifts that her mother had given her over the years:“I appreciate these, and they mean something to

[单选题]A．ccording to Paragraph 4, what’s Jovce’s opinion about life in 1900? [ ]A． There were fewer problems for the familyB． Life was simpler but worse than it is nowC． There were things she liked and dislikedD． The family had more time to stay together

[单选题]Who divide after duret into the river to save the little girl? ( )A． David AndersonB． a passer-byC． his girlfriendD． a taxi driver.

[单选题]People laugh when tickled by others bedause the feeling is _______. [ ]A． unexpectedB．expectedC． comfortableD． uncomfortable

[单选题]What did duret do shortly after the ambulance came? ( )A． He was interviewed by a newspaperB． He asked his girlfriend for his dry clothesC． He went to the hospital in the ambulanceD． He disappeared from the spot quickly

[单选题]When was duet most probably found to be the very hero? ( )A． the day when he was leaving for home.B． a couple of days after the girl was rescuedC． the first day when he was in New YorkD． the same day when he was interviewed.

[单选题]A．ccording to the text, Jeffers is probably _______. [ ]A． a computer programmerB． a test subjectC． a human brain expertD． a medical doctor