Traditional network layer packet forwarding relies on the information provided by network layer （1） protocols, or static routing, to make an independent（2） decisions at each hop within thenetwork. The forwarding （3）is based solely on the destination （4） IP address. All packets for thesame destination follow the same path across the network if no other equal-cost paths exist.Whenever a router has two equal-cost （5）toward a destination, the packets toward the destinationmight take one or both of them, resulting in some degree of load sharing.

（2）是（）

A.forwarding

B.connecting

C.routing

D.killing

长期应用糖皮质激素可引起

A．向心性肥胖

B．减少磷的排泄

C．高血钾

D．低血糖

E．高血钙