单项选择题

What is the first paragraph mainly about

A．Recent predictions of computer related jobs.
B．The wide of computers in schools.
C．The urgency of computers education.
D．Public interest in computers.

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单项选择题

Which of the following items is probably allowed in the checked baggage().

A.A
B.B
C.C
D.D

单项选择题

The leaflet is most probably provided by TSA to those who ______.

A．refused to check in their baggage.
B．had their baggage selected for inspection.
C．kept some damaged items in their baggage.
D．left their baggage unlocked.