单项选择题
In most cases，the （）of a person who sits on a pin is to leap into the air.
A.reactionB.behaviorC.functionD.instance
单项选择题 Being an （）manager means knowing when to use the right management style.
单项选择题 Logistics means systematic management of（）activities.
单项选择题 We sell insurance cover your payment （）will depend on the cover you require.
