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大学英语练习题：
The White House is the most visited residence in the world. Tours may be scheduled through our Washington DC office. Due to security and scheduling procedures, there are a few things you should know before requesting a tour:
   ·Only groups of 10 or more may request a tour.
   ·Requests must be submitted with a minimum of one month’s advance notice from the date of the tour. Notice of whether your application is accepted will be given 10 days prior to the date requested. All tours, even after they have been confirmed, are subject to cancellation due to security interests.
   ·Tours are only conducted Tuesday through Saturday from 7:30 am to 11:30 am.
    To process your request for a tour, please contact our Washington office at （202）224-5521 and provide the following information:
   ·Date(s) requesting.
   ·Security information for each person in your party, including: name as it appears on I.D.(I.D. required for ages 14 and up), date of birth, social security number, country of orgin, and citizenship（公民的身份）.
   ·A home address and daytime and evening phone numbers for the designated（指派的）leader of the group.
   ·A contact number while in DC for the designated leader of the group.
After your request is confirmed or denied, our office will contact you with further instructions.
    1、This notice is to provide information about       .
    A. scheduling of Washington DC tours         
    B. the security system of the White House
    C. Application for a tour of the White House    
    D. duties of a tour group leader
   
    2、The White House is open to the public    .
    A. on weekdays only                       
    B. five days a week
    C. Every other day                         
    D. on weekends only
   
    3、Application for a group tour of the White House must be submitted      .
    A. exactly on the date of application           
    B. at least 30 days in advance
    C. Any day between Tuesday and Saturday     
    D. 10 days before the date of the tour
   
    4、After your tour request has been confirmed,       .
    A. it is still possible that your may be canceled
    B. you are still allowed to change your visiting date
    C. you can surely visit the White House that day
    D. it is necessary for you to start your tour immediately
   
    5、It can be inferred from the passage that    .
    A. teenagers under 14 are not allowed to visit the White House
    B. foreigners are less likely to be permitted to tour the White House
    C. security is the chief concern in scheduling White House tours
    D. separate tours can also be scheduled for individual visitors
   
 
大学英语练习题答案：
 1、解析：这则通知是提供哪一方面的信息呢？从短文第一段可知，它与游览白宫有关，接着就告诉我们有关提出申请的注意事项，因此答案选C。
  
 2、解析：白宫何时对游客开放呢？从短文中所说的“tours are only conducted Tuesday through Saturday…”可知，它每周星期二至星期六对游客开放，因此答案选B。
 
 3、解析：游览白宫的申请必须在何时提交呢 从短文中所说的“Requests must be submitted with a minimum of one month’s advance notice from the date of the tour.”可知，游客至少要提前一个月提交申请，因此答案选B。
 
 
 4、解析：当你游览白宫的申请获得批准之后，还会发生什么情况呢？短文中提到“all tours,even after have been confirmed,are subjects to cancellation due to security interests.”由此可知，出于安全方面的考虑，游客的申请可能取消，因此答案选A。
 
 5、 解析：本题为推理题。短文中提到“name as it appears on I.D.(I.D.required for ages 14 and up”,由此可知，只有年龄在14岁以上的才有身份证，而安全信息里必须包含身份证，也就是说没有身份证就不能参观白宫，故正确答案为A。