阅读下面短文，掌握其大意， 然后从21-40各题所给的四个选项（A、B、C和D）中，
选出最佳选项。
I’m sitting in a quiet room at the Millcroft Hotel，a peaceful place hidden back among pine trees about an hour out of Toronto. It’s just past noon，late July，and I’m__1__the desperate sounds of a lifeordeath__2__going on a few feet away.
There’s a small__3__burning out the last of its short life’s energies in a(an)__4__to fly through the glass of the window.__5__，it’s not working. The great effort offers no hope for survival. Ironically (讽刺地)，the struggle is part of the trap. It is__6__for the fly to try hard enough to succeed in__7__through the glass. This fly is doomed (注定失败)．It will__8__there on the windowsill.
