填空题

Generally speaking, the advances in science and technology have benefited human beings, but some- times at the expense of serious consequences they have to face.

【参考答案】

Y

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填空题

Now all countries in the world are faced with the same environmental problems, air pollution, water pollution, the loss of species, etc.

填空题

In Schwartz’s opinion, it is environmental forces that are the main threes to change the future of the world.