根据车辆购置税法律制度的规定，纳税人免税、减税车辆因转让、改变用途等原因不再属于免税

在解几何证明题时，学生常从问题的目标状态往回走，先确定达到该目标所需要的条件，然后再将达到目标所需要的条件与问题提供的已知条件进行对比，完成证明过程。这种方法属于问题解决中的（）。

A．反推法

B．算法式

C．简化法

D．类比法

对致心律失常型右室心肌病的病因可能为（）

A.病毒感染

B.冠心病

C.染色体显性遗传

D.糖尿病

E.结缔组织病

假如有一天电磁波不能在真空中传播了，下列现象不能发生的是[ ]

A．太阳光无法照到地球上

B．太空飞船中的宇航员无法和地面上的指挥人员取得联系

C．科学家仍能方便地测量天体之间的距离

D．我们再也看不到卫星直播了

Most, if not all, Chinese have become richer thanks to 28 years of reform and opening up. But are we any happier?

　　Various surveys attempt to answer this question. Though experts have presented varying percentages based on different standards, their answers tend to find we are generally happier, and the number of optimists rises each year. The Chinese Academy of Social Sciences’ 2006 Blue Book on social progress says 70 per cent of rural and urban citizens surveyed in 2005 reported a feeling of happiness and were optimistic about their futures.

　　But each survey shows a worrisome fact that 10 per cent, at the lowest, of citizens were not content with their lives or not hopeful about the future. We cannot be content with the fact that at least 130 million of our countrymen are not happy.

　　Although a sense of happiness remains a luxury（奢望）for many of our countrymen because of poverty, we agree wealth is not the only factor of happiness. For most of us, except the extremely rich and naturally born optimists, there simply are too many variables (可变物) that may kill the feeling of happiness. These include, but are not limited to, rising housing prices, tight and instable job market, back-breaking schooling expenses and medical bills.

The most common one, however, is a low sense of security (安全). Some experts pointed that in the low-and-middle income group there was too much uncertainty regarding employment, income, housing, medical situations, and education. How can you feel happy when you always have to prepare yourself for the unexpected?

It may be beyond the government’s reach, not to mention duty, to guarantee (保证) higher income for every citizen. But it does have a burden to create an environment where all citizens can feel a reasonable level of security.

小题1:From the second paragraph we learn _____________________.

A．70 % of Chinese people feel happy and optimistic about their future

B．the data and the conclusions of the surveys are the same

C．the surveys about the sense of happiness were carried out in 2006

D．the purpose of the surveys is to find out the percentage of rich people小题2:The following factors of happiness are mentioned in the passage EXCEPT _________.

A．security

B．environment

C．wealth

D．employment小题3:The underlined word “countrymen” in Paragraph 3 refers to ___________.

A．people from the countryside

B．people from cities

C．people from all countries

D．Chinese citizens小题4: According to the passage, the author tends to hold the view that _________.

A．the wealthier we get, the happier we become

B．though we get wealthier, we do not feel happier

C．it is the government’s duty to raise every citizen’s income

D．the government should make sure all citizens feel a good level of security

开采时，将工作台阶划分成若干个条带逐条顺次开采，称每一条带为（）。挖掘机一次挖掘的宽度为（）。