Eagle has the longest life-span of its’ species. Eagle can ___1___ up to 70 years, but to reach this age, the Eagle must make a hard decision.
In it's 40’s, its’ long and flexible talons (爪) can no longer grab prey (掠食) which serve as food, its' long and sharp beak (鸟嘴, 喙) becomes bent. Its’ old-aged and heavy wings, due to their thick feathers, become stuck to its’ chest and make it ___2___ to fly. Then Eagle is left with only two options: die or go through a painful process of change which lasts 150 days for survival.
The process requires that Eagle fly to a mountain top and sit on its’ nest. There the Eagle knocks its' beak ___3___ a rock until it plucks (拔去) it out. After plucking it out, Eagle will wait for a new beak to grow back. When its’ new talons grow back, the eagle starts plucking its' old-aged feathers and after five months, eagle can take its' flight of rebirth and lives for thirty ___4___ years.
Many times, in order to survive, we have to start a change process. We sometimes need to ___5___ old memories, habits and other past traditions. Only freed from past burdens, can we take advantage of the present.
4. ____

A.against

B.difficult

C.get rid of

D.live

E. more