解答题：已知函数f（x）=（x3+3x2+ax+b）e-x．（1）如a=b=-3，求f

题型：阅读理解

阅读理解。

A habit is any action that we have performed so often that it becomes something that we do almost without thinking. Some of them are thought to be bad habits. People spend countless hours and dollars each year trying to get rid of these bad habits but often fail. Why? Change is hard work and there is no shortcut to achieve it. However, there is still some advice for you to follow.

First, look at why you do it. In other words, what's the result of doing this thing? If your bad habit is

shouting at people when you are unhappy or under pressure, what do you get from it? It may make you

feel a little better for the moment. Or maybe you have a bad habit of leaving your homework undone. The result could be that you get more time to spend on the Internet!

Next, take a look on the other hand. What are you losing because of your habit? Shouting at other

people is a bad habit because it makes people around you feel bad and unhappy. Leaving your homework undone is a bad habit because you may be punished by your teacher. Having more Internet time means

that you are losing the chance to learn the things that you need to learn. When you think that way, you'll

find that it's not wise to keep your bad habit! Now it is time to make a decision. What will you choose? I'm sure you will choose to do what you think is more important.

1. From the first paragraph we know that __________.

A. a habit is a terrible thing that we can never change

B. people take countless hours and dollars to get rid of habits

C. none of the people who try to break bad habits are successful

D. though it is difficult, we can still do something about our bad habits

2. The underlined sentence "there is no shortcut to achieve it" means that ________.

A. it is not easy to get rid of bad habits

B. there is a long way and a short way

C. something dangerous may happen

D. we must cut it in a short time.

3. According to the reading, if you want to get rid of your habits, you have to _____.

A. talk to others when you are in low spirits

B. know why you do what you do

C. finish your homework first

D. spend less time on the Internet

4. Which of the following does NOT happen because of a bad habit according to the reading?

A. You are punished later.

B. Making people around you feel unhappy.

C. You feel a little better after shouting at others.

D. You leave your homework at home by accident.

5. The main purpose of this passage is to __________.

A. introduce and describe

B. complain and disagree

C. explain and advise

D. discuss and argue

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题型：选择题

建设生态农业时巧设、增设食物链的目的不包括[ ]

A．实现物质的分层次多级利用

B．实现能量的循环，使废物资源化

C．加强生物防治，控制有害生物的危害

D．减轻污染，提高抵抗力稳定性

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题型：多项选择题

案情：A市B区税务所(国税)2007年7月15日接到群众举报，辖区内大明服装厂(系个体工商户)开业两个月没有纳税。
2007年7月16日，税务所对大明服装厂依法进行了税务检查。经查，该服装厂2007年5月8日办理了营业执照，5月10日正式投产，没有办理税务登记，共生产销售服装420套，销售额 90690元，没有申报纳税。根据检查情况，税务所于7月18口拟作出如下处理建议：
1．责令服装厂7月25日前办理税务登记，并处以500元罚款；
2．按规定补缴税款、加收滞纳金，并对未缴税款在《税收征管法》规定的处罚范围内，处以 10000元罚款。
2007年7月19日送达《税务处罚事项告知书》，并告知服装厂有要求举行听证的权利。税务所7月21日按上述处理意见作出了《税务处理决定书》和《税务行政处罚决定书》，同时下发《限期缴纳税款通知书》，限该服装厂于2007年7月 28日前缴纳税款和罚款，并于当天将二份文书送达给了服装厂。
服装厂认为本厂刚开业两个月，产品为试销阶段，回款率低，资金十分紧张，请求税务所核减税款和罚款，被税务所拒绝。7月28日该服装厂缴纳了部分税款。7月29日税务所又下达了《催缴税款通知书》，催缴欠缴的税款、滞纳金和罚款。在两次催缴无效的情况下，经区税务局长批准，于8月2日，税务所扣押了服装厂 23套服装，以变卖收入抵缴部分税款和罚款。服装厂在多次找税务所交涉没有结果的情况下， 8月15日书面提出行政复议申请：要求撤销税务所对其作出的处理决定，并要求税务所赔偿因扣押服装给其造成的经济损失。

对于加收滞纳金和罚款的理解，正确的是( )。

A．加收滞纳金属于行政强制措施，罚款属于行政处罚

B．加收滞纳金和罚款都属于行政处罚中的财产罚

C．税务所有权决定2000元以下的罚款

D．税务所必须以所属税务局的名义做出罚款决定

E．加收滞纳金属于即时性强制行为

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题型：判断题

计量标准考核证书的有效期，一般为3～5年。

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题型：多项选择题

ZXWR RNC以下高度为1U的有（）

A.配电插箱

B.业务插箱

C.风扇插箱

D.假面板

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已知函数f（x）=（x3+3x2+ax+b）e-x．（1）如a=b=-3，求f

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