单项选择题


A．At an airport.
B．In a police station.
C．In a department store.
D．On a subway.
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单项选择题
Why do the staff members cover themselves with cloth as they work
A．So that they are protected from scratches by the crane’s talons.
B．So that they aren’t exposed to infectious diseases.
C．So that the chicks can be examined in a sterile environment.
D．So that the chicks don’t become dependent on humans.
单项选择题
Which of the following about the Internet is true according to the passage
A．The Internet is the greatest progress for this century.
B．Efforts are needed to control Internet.
C．Paraguay refused to sign a treaty for transmission.
D．The United Nations has found ways to prevent the Internet from developing.
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