The black robin is one of the world’s rarest birds. It is a small, wild bird, and it lives only on the island of Little Mangere, off the coast of New Zealand. In 1967 there were about fifty black robins; in 1977 there were fewer than ten. These are the only black robins left in the world. The island has many other birds, of different kinds, large and small; these seem to multiply very happily.

Energetic steps are being taken to preserve the black robin. Detailed studies are going on, and a public appeal for money has bee made. The idea is to buy another island nearby as a special home, a “reserve”, for threatened wild life, including black robins. The organizers say that Little Mangere should then be supplied with the robin’s food—it eats only one kind of seed. Thousands of the required plants are at present being cultivated in new Zealand. The public appeal is aimed at the conscience of mankind, so that the wild black robin will not die out and disappear form the earth in our time at least.

Is all this concern a waste of human effort? Is it any business of ours whether the black robin survives or dies out? Are we losing our sense of what is reasonable and what is unreasonable?

In the earth’s long, long past, hundreds, of kinds of creatures have evolved, risen to a degree of success—and died out. In the long, long future, there will be many new and different forms of life. Those creatures that adapt themselves successfully to what the earth offers will survive for a long time. Those that fail to meet the challenges will disappear early. This is nature’s proven method of operation.

The rule of selection—“the survival of the fittest”—is the one by which human beings have themselves arrived on the scene. We, being one of the most adaptable creatures the earth has yet produced, may last longer than most. You may take it as another rule that when, at last, human beings show signs of dying out, no other creature will extend a paw to put off our departure. On the contrary, we will be hurried out. For nature, tough fair, is a hard-hearted mistress. She has no favorites.

Life seems to have grown too tough for black robins. I leave you to judge whether we should try to do something about it.

57．The black robin is dying out mainly because        .

       A．people have been very careless about its survival

       B．its only food supply is far from enough on Little Mangere

       C．the other birds on the island have destroyed it

       D．the appeal for money has come at the wrong time

58．In Paragraph 3, the writer puts forward three questions to        .

       A．make a comparison  B．make an argument

       C．introduce a topic             D．present his own idea

59．As for selection and survival, the decisive factor seems to be        .

      A．the ability to adapt to changed or changing conditions

       B．the number of wild life reserves that are available

       C．the concern and generosity of the public

       D．the size of the home, or the amount of space one has to live in

60．The writer’s attitude towards the protection of the black robins is         .

       A．a(chǎn)ctive       B．passive     C．unconcerned     D．optimistic

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