单选题Direction: Read the following text. Choose
the best word or phrase for each numbered blank.
Nowadays almost every city has an airport, {{U}} {{U}} 1
{{/U}} {{/U}}two, in the case of some big cities. Like a railway station, an
airport is a very {{U}} {{U}} 2 {{/U}} {{/U}}place. At almost
any hour of the day or night it is thronged {{U}} {{U}} 3
{{/U}} {{/U}}people, many of them are passengers who are {{U}} {{U}}
4 {{/U}} {{/U}}waiting for a flight out or who have just {{U}}
{{U}} 5 {{/U}} {{/U}}. Today, a great number of people travel from
one country to another by plane just as {{U}} {{U}} 6 {{/U}}
{{/U}}as other people {{U}} {{U}} 7 {{/U}} {{/U}}from one town to
another within the same country by train or bus. The big
building in which passengers wait for their plane is called the {{U}}
{{U}} 8 {{/U}} {{/U}}. When a passenger arrives {{U}} {{U}}
9 {{/U}} {{/U}}the terminal, he goes to the airline {{U}} {{U}}
10 {{/U}} {{/U}}has arranged his trip. There he {{U}} {{U}}
11 {{/U}} {{/U}}his ticket as {{U}} {{U}} 12 {{/U}}
{{/U}}that he has a seat in the plane. He also {{U}} {{U}} 13
{{/U}} {{/U}}his heavy luggage to {{U}} {{U}} 14 {{/U}}
{{/U}}and sent to the hold of the aircraft. The passenger is allowed to carry only
light articles with him. If his ticket is in order, and his luggage is not
{{U}} {{U}} 15 {{/U}} {{/U}}, he is given a card called a
{{U}} {{U}} 16 {{/U}} {{/U}}pass which allows his admission
{{U}} {{U}} 17 {{/U}} {{/U}}the plane. However, he can not
proceed to the aircraft {{U}} {{U}} 18 {{/U}} {{/U}}he {{U}}
{{U}} 19 {{/U}} {{/U}}an announcement over the loudspeakers that his
plane is about to {{U}} {{U}} 20 {{/U}} {{/U}}.