17．Digital fingerprinting，fluctuations（波動）in the dollar exchange rate，and a mass of online information are some of the ways making travel to the United Nations in 2010a different （51）C for international visitors than it was earlier in the 21
st century．
These （52）A are evident before the visitors leaves his or her country．
In 2004，the U．S．Department of Homeland Security（DHS）--a department of the federal government established by laws and regulations in late 2002，after the September 11，2001，terrorist attacks--established a new series of security （53）D for the international visitors holding non-U．S．passports or visas．
（54）B when these visitors apply for a visa，the officer （55）Cthem reviews their application and supporting papers and collects both digital fingerprints and a digital photograph．
Recently，the waiting time for these interviews has been significantly （56）A．According to Geoff Freeman，a senior vice president of public affairs of U．S．Travel，the trade organization for the U．S．travel industry，many prospective visa applicants now wait fewer than 30days for an interview，（57）Bmore than 100days in the past．
The Visa Waiter Program（VWP）--which （58）Dcitizens from countries that meet various security and other requirements from obtaining a visa for visits to the United States of 90days or fewer for business or pleasure--（59）B 36countries such as Australia，Austria，Belgium and so on．
A traveler from a country （60）C in the VWP must obtain an Electronic System for Travel Authorization（ESTA），an online travel authorization，established by DHS．ESTA determines，before the traveler boards a flight，whether the traveler is （61）Bto travel to the United States under the VWP and whether such travel poses any law implementation or security risks．
When an international traveler arrives in the United States，he or she must subject one of the two （62）C to the U．S．Customs and Boarder Protection（CBP）officer：either a white Form I-94，if the traveler has a visa，or a green Form I-94W，if the traveler is a VWP participant．The CBP officer asks the traveler questions about his or her stay，scans the traveler's fingerprints，and takes a digital photograph． （63）C，VWP travelers，who are not required to obtain a visa，will soon need to pay a fee．The travelers keeps a portion of the I-94or I-94W form after the CBP （64）A and returns it to CBP upon departure from the United States．
In 2007 Congress authorized the consumption of 40 million dollars on a"Model Ports of Entry"program，designed to improve the （65）Cprocedures of foreign travelers at the 20 U．S．a(chǎn)irports with the highest number of international visitors．The program aims to improve staffing，queue management，signage，and infrastructure at the top 20 U．S．international airports and to hire at least 200 new CBP officers．
| 51．A．experiment | B．examination | C．experience | D．excursion |
| 52．A．changes | B．fluctuations | C．fingerprints | D．communications |
| 53．A．explanations | B．registrations | C．a(chǎn)pplications | D．procedures |
| 54．A．Surprisingly | B．Specifically | C．Hopefully | D．Occasionally |
| 55．A．inspecting | B．instructing | C．interviewing | D．investigating |
| 56．A．reduced | B．resolved | C．reviewed | D．released |
| 57．A．owing to | B．compared to | C．a(chǎn)ccording to | D．a(chǎn)dded up to |
| 58．A．protects | B．stimulates | C．promises | D．relieves |
| 59．A．leads to | B．a(chǎn)pplies to | C．depends on | D．makes up |
| 60．A．persevering | B．previewing | C．participating | D．promoting |
| 61．A．a(chǎn)ccessible | B．a(chǎn)cceptable | C．a(chǎn)vailable | D．a(chǎn)daptable |
| 62．A．participants | B．decisions | C．documents | D．photographs |
| 63．A．For instance | B．As a result | C．In addition | D．On the contrary |
| 64．A．check | B．project | C．design | D．proposal |
| 65．A．queue | B．program | C．a(chǎn)rrival | D．departure． |
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