海关可以撤销报关企业注册登记的情形包括报关企业有走私犯罪行为或1年内有2次以上走私行

关于金银首饰零售环节征税的陈述，下列正确的有（）。

A．改在零售环节征收消费税的金银首饰仅限于金基、银基合金首饰以及金、银和金基、银基合金的镶嵌首饰

B．零售环节适用税率为5%，在纳税人销售金银首饰、钻石及钻石饰品时征收

C．金银首饰与其他产品组成成套消费品销售的，应按销售额全额征收消费税

D．金银首饰连同包装物销售的，无论包装是否单独计价，也无论会计上如何核算，均应并入金银首饰的销售额，计征消费税

       材料：根据国家统计局的统计，2007年年末全国总人口为132129万人，出生率为12.10‰；，死亡率为6.93‰。其中65周岁及以上为10636万人，占总人口的比例为8.1%。回答1—3题

1、由材料可知，目前中国人口增长模式属于[ ]

A．原始人口增长模式

B．传统人口增长模式

C．过渡人口增长模式

D．现代人口增长模式

2、中国人口问题比世界很多国家更复杂，其主要表现是[ ]

A．由于实行计划生育，年均净增人口减少，劳动力不足

B．文化素质提高，生育率下降

C．一方面人口基数大，人口增长快；另一方面人口老龄化严重

D．民族众多，计划生育执行难度大

3、下列说法被大多数学者认同的是[ ]

A．目前我国人口仍低于人口容量

B．目前我国人口仍远低于人口合理容量

C．目前我国应大大放宽计划生育的限制条件，缓解老龄化问题

D．我国每年净增人口多主要因为自然增长率高

下列有关文学常识的表述，不正确的一项是（ ）

A．闻一多，中国现代诗人、学者和民主战士。他的诗抒写了对祖国和人民命运的深切关注，洋溢着强烈的爱国主义精神。有诗集《红烛》和《死水》。

B．舒婷，当代女诗人。在二十世纪七十年代末期，她与北岛、顾诚、梁小斌等人，在中国诗坛上掀起了一股“朦胧诗大潮”，表达了一代人对生活的思索。

C．普希金，俄罗斯伟大的民族诗人，俄罗斯现实主义文学的奠基人。他的代表作品是诗体长篇小说《上尉的女儿》，这篇小说被别林斯基誉为“俄国生活的百科全书”。

D．中国新诗诞生于五四运动前夕，它不断接受外来思想文化的影响，并融合了民族风格，涌现出一大批诗人、诗作和众多艺术流派。

阅读理解。

     Not all memories are sweet. Some people spend all their lives trying to forget bad experiences. Violence

and traffic accidents can leave people with terrible physical and emotional scars. Often they relive these

experiences.

     Now American researchers think they are close to developing a pill, which help people forget bad memories.

The pill is designed to be taken immediately after a frightening experience. They hope it might reduce, or

possibly erase the effect of painful memories.

     In November, experts tested a drug on people in the US and France. The drug stops the body releasing

chemicals that fix memories in the brain. So far, the research has suggested that only the emotional effects

of meomories may be reduced, not that the memories are erased.

     The research has caused a great deal of argument. Some think it is a bad idea, while others support it.

Supporters say it could lead to pills that prevent or treat soldiers' troubling memories after wars.

     They say that there are many people who suffer from terrible memories. "Some memories can ruin people's

lives. They come back to you when you don't want to have them in a daydream or nightmare. They usually

come with very painful emotions," said Roger Pitman, a professor of psychiatry (精神病学) at Harvard

Medical School. "This could relieve( 减轻) a lot of that suffering."

     But those who are against the research say that changing memories is very dangerous because memories

give us our identity. They also help us avoid the mistakes in the past. "All of us can think of bad events in our

lives that were horrible at the time but make us who we are. I am not sure we'd want to wipe those memories

out." said Rebecca Dresser, a medical ethicist.

1. What's the main idea of this passage? [ ]

A. People often suffer from bad memories.

B. American researchers are trying to develop a pill.

C. Forget bad memories, and be happy.

D. The research has caused a heated argument.

2. The underlined word "it" in Paragraph 4 refers to "_____". [ ]

A. the new drug

B. the research into the drug

C. the bad memory

D. the chemical in the drug

3. Which of the following is NOT the opinion of the opponents (反对者)?[ ]

A. Our memories give us our identity.

B. The memories help human avoid mistakes of the past.

C. The drug should be used in only very serious cases.

D. People may not be sure whether they want to wipe the memories out.

专家认为，如果汽车技术行业经过长年的研发能降低3%的油耗，就可以算是非常显著的研究成果了；但即使是能降低3%的油耗，对实际生活中的消费者来说也不太明显。而且汽车生产厂家在不影响加速动力性的情况下，已经在尽量省油，目前生产的汽车在节油和动力方面的效果已经达到了最佳配置比。
根据这段话，以下说法正确的是______。

A．汽车消费者对能否节约3%的汽油不在乎
B．目前生产的汽车已经达到了最佳的制动效果
C．无论汽车技术怎么发展，节油效果都不会很显著
D．在节油和动力的最佳配置比方面再寻求突破难度很大