问题 多项选择题

下列关于免疫浊度法的描述,正确的是()

A.速率散射比浊法精密度优于单向免疫扩散法和终点散射比浊法

B.速率散射比浊法精密度比单向免疫扩散法和终点散射比浊法差

C.免疫比浊法自动化检测分析时必须启动抗原过量的自动检测程序

D.在进行抗原过剩检测时,加入已知校正样品时浊度峰出现再次上升表示抗体仍有过剩,待检抗原的含量在系统检测的线性范围内

E.在速率散射比浊法进行抗原过剩检测时,加入已知校正样品时浊度峰出现再次上升表示抗体没有过剩,待检抗原的含量超出了系统检测的线性范围,需重新稀释后再检测

答案

参考答案:A, C, D

阅读理解

阅读理解

     London has more than nine million visitors every year.  They come and visit some of the most famous

places in England: Big Ben, the Tower of London and the River Thames.

    You can see some of the most interesting places in London by getting on the tour buses.  Or you can

take a ride on the London Eye.  This large wheel slowly takes  you 135m above the River Thames.

    The River Thames is London's main waterway.  It has shaped the capital's landscape, history and

geography.  So one of the best ways of making sense of the city is to take a trip along the river.

     The Clock Tower to the Houses of Parliament, Big Ben, has become one of the main symbols of

London.  The sound of the bell, which you can hear at the beginning of many television and radio programmes,has become well-known throughout the nation.

    No visit to London is complete without a look at the Tower of London, in the eastern part of the city.  

After Big Ben, the Tower may be London's most visited tourist spot.  Directly south is Tower Bridge,

which is more than 100 years old.

    Among all the palaces in London, Buckingham Place is the most famous.  It has been the home of the

royal family since.  Queen Victoria moved there in 1837. You can visit some of the rooms in August and

September.  And most mornings of the'year you can watch the soldiers outside changing the guard.

    About one hour by train out of London is the town of Windsor.  Here you can visit another of the

Queen's homes-Windsors Castle.  There was a fire in 1992 and  many of the rooms were badly burned.   But now they are full of beautiful pictures, tables and chairs again.

    Sightseeing in London is great, but it can get very tiring.  So, the best way to start the day is to fill up

with an Engnsh breakfast.

   You can buy an English breakfast in nearly every hotel, and at many restaurants and cafes.  An English

pub is a good place to stop for lunch and a drink.   You can get hot or cold food and try one of England's many ales(浓啤酒).  Fish and chips are also a traditional English meal.  So look out for fish and chip

shops in cities as well as by the sea.

   Or you can sit outside one of the many roadside pubs and cafes in London, and simply watch the busy

world go by.

1.  We can leam from the text that           .

A.  Windsor Castle has been rebuilt

B.  the sound of the Big Ben can be heard everywhere

C.  only some of the hotels in England serve breakfast

D. the London Eye can carry you where you like to go

2.  Which place may be London's most visited tourist spot?

A.  Big Ben. 

B.  The Tower of London. 

C.  Buckingham Palace. 

D.  The River Thames.

3. If you go to London in December, you will not be able to _      

A.  visit Windsor Castle

B.  tour the Buckingham Palace

C.  tour the city along the River Thames

D. watch the soldiers outside the Buckingham Palace changing guards

4.  The underlined word "landscape"  ( Paragraph 3) is  closest in meaning to        

A.  sights                      

B.  interest

C.  growth                    

D.  travel

单项选择题