发布时间：2016-03-22 来源：新东方在线 发布人：wyznl
Is all this concern a waste of human effort? ________. Are we losing our sense of what is reasonable and what is unreasonable?
A、Life seems to have grown too tough for black robins.
B、Is it any business of ours whether the black robin survives or dies out?
C、The organizers say that Little Mangere should then be restocked (重新准备) with the robin's food.
D、Energetic steps are being taken to preserve the black robin.