《危险废物填埋污染控制标准》规定，填埋场场界应位于居民区( )m以外，并保证在当地

建设工程质量保修书的提交时间上()。

A．自提交工程竣验收报告之日起l5日内

B．工程竣工验收合格之日

C．自工程竣工验收合格之日起15日内

D．提交工程竣工验收报告时

确定不同的决策究竟需要哪些确切信息的环节为（）

A.决策分析

B.信息需求分析

C.决策集成

D.决策反馈

There are stories about two U．S . presidents，Andrew Jackson and Martin Van Buren，which attempt to explain the American English term OK．We don’t know if either story is true，but they are both interesting．

The first explanation is based on the fact that President Jackson had very little education．In fact，he had difficulty reading and writing．When important papers came to Jackson，he tried to read them and then had his assistants explain what they said．If he approved of a paper, he would write “all correct”on it．The problem was that he didn’t know how to spell．So what he really wrote was “ol korekt”．After a while，he shortened that term to “OK”．

The second explanation is based on the place where President Van Buren was born，Kinderhook，New York．Van Buren’s friends organized a club to help him become President .They called the club the Old Kinderhook Club，and anyone who supported Van Buren was called“OK”．

小题1:The author  __________.

A．believes both of the stories

B．doesn’t believe a word of the stories

C．is not sure whether the stories are true

D．is telling the stories just for fun小题2:According to the passage，President Jackson_____________.    

A．couldn’t draw up any documents at all

B．didn’t like to read important papers by himself

C．often had his assistants sign documents for him

D．wasn’t good at reading，writing or spelling小题3:According to the first story, the term “OK”_______________.  

A．was approved of by President Jackson

B．was the title of some Official documents

C．was first used by President Jackson

D．was an old way to spell “all correct’’小题4:According to the second story，the term ‘‘OK”_____________.  

A．was the short way to say‘ ‘old Kinderhook Club”

B．meant the place where President Van Buren was born

C．was the name of Van Buren’s club

D．was used to call Van Buren’s supporters in the election小题5:According to the second story, the term “OK” was first used ______________

A．by Van Buren

B．in a presidential election

C．to organize the Old Kinderhook Club

D．by the members of the ‘‘Old Kinderhook Club”

在( )条件下，纳税人的实际税收负担率等于其法定税率。

A．固定税率

B．累进税率

C．累退税率

D．比例税率

 下个图形为（）。

A.

B.

C.

D.