1、 熟练利用导数求解多项式函数的单调区间、极值、最值等;
现在有很多同学迷恋上网,假设你们班在下周班会上讨论有关上网的问题。请你根据提示写一篇发言稿。
好处:学习使用电脑,查阅资料,了解更多的知识。
弊端:花许多时间玩游戏,在网上聊天,耽误时间,使学习越来越差。
建议:学习时,不上网;假期可以适当上网,但不能整天沉迷其中
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A:请根据对话内容选择正确的单词,并将其适当形式填入横线上。(每小题1分,共5分)
work much take prefer look
A:Saleswoman B:Mrs Green
A:Good afternoon ! Can I help you ?
B:Yes , please . I’m 61 for a mobile phone .
A:We have many popular kinds , like Motorola , Nokia and so on .
B:I 62 the things made in China .Do you have a TCL ?
A:Yes , TCL is also popular . What about this one ?It’s the newest .
B:Well , I don’t want the newest . I’d like a practical(实用的) one .
A:This one looks nice and 63 well .
B:How 64 is it ?
A:1,350 yuan .
B:That’s a bit expensive . But I’ll 65 it .
B:根据对话内容,从方框中选出五个合适的句子补全对话,并将其标号填入题后括号内。(每小题1分,共5分)
Jenny:Mum, I'm really stressed (紧张的).
Mother: 66( )
Jenny:We are going to havea big test tomorrow. 67( )
Mother: 68( ) You' ve been working hard recently.
Jenny:But I am still not sure of myself.
Mother: 69( ) That' 11 help you relax.
Jenny:Good idea! Maybe I should go to bed early tonight.
Mother: 70( ) A good night's sleep will refresh you for tomorrow.
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66.________. 67. ________ 68. ________ 69._________ 70. ________
60.( ) A. Rob B. the headmaster C. he himself D. the teacher
59.( ) A. no one B. someone C. anyone D. everyone
58.( ) A. heart B. job C. mind D. place
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