“ We are not now that strength which in old days
     Moved earth and heaven; that which we are;
     One equal temper of heroic hearts,
     Made weak by time and fate, but strong in will
     To strive, to seek, to find, and not to yield.”
     These lines are quoted from Tennyson’s "______".
A、Crossing the Bar
B、Ulysses
C、Come down, O Maid
D、Break, Break, Break