单项选择题

When the athlete experienced ______ heartbeats and pain in his left arm, the trainer sent him to the emergency room.

A．irregular
B．derivative
C．primary
D．multiple
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单项选择题
In recent years, teachers far outnumber the available teaching positions in many ______ in the US.
A．items
B．disciplines
C．conferences
D．projects
单项选择题
The students expressed so much ______ to a possible close-the-campus-at-lunch policy that the principle decided it would be better not to adopt the regulation.
A．reluctance
B．negative
C．opposition
D．deny
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