Ктексту ответить на вопросы. two courses of action the problem of the environment crisis has recently assumed global proportions. both scientists and politicians agree that unless some radical steps are taken before long, life on our planet may be irrevocably damaged if not destroyed altogether. it seems therefore worth while to consider the fundamental conflict which underlies the surface manifestations of the present crisis. for there undoubtedly exists a conflict, an incompatibility between the tenets of an industrial society and those of ecology. industry is bound to expand continuously, all ecological systems tend toward stability equilibrium. there seems to be at least two general courses of action which might be adopted in order that the environmental doom may be averted. one would be to curb the dynamics of industrial development; the other - to turn technology to the construction of physiologically and socially healthy environment, the former possibility being highly unrealistic, the latter one seems to be the only path to follow. 1. why has the environmental crisis assumed global proportions? 2. what problem worries scientists and politicians alike? 3. how can we possibly avert the destruction of the environment? 4. can you suggest any other courses of action to protect the environment?

1. Why has the environmental crisis assumed global proportions? Environmental crisis assumed global proportions because of the incompatibility between the tenets of an industrial society and those of ecology.
2. What problem worries scientists and politicians alike?
Both scientists and politicians are worried since life on our planet may be irrevocably damaged if not destroyed because of the environment crisis.
3. How can we possibly avert the destruction of the environment?
We can either curb the dynamics of industrial development or turn technology to the construction of physiologically and socially healthy environment.
4. Can you suggest any other courses of action to protect the environment?
I can't suggest any more possible courses of action in this situation since they all seem to be variations of previously mentioned paths.

1 have reading 2 have playing 3 has cleaning 4 has swimming 5 has speaking 6 have waiting 7 have doing 8 has snowing 9 have riding 10 has explaining

1 I haven't reading this book. 2 We haven't playing volleyball or 20 minutes. 3 She hasn't cleaning the flat for more than an hour. 4 Peter hasn't swimming for half an hour. 5 Ann hasn't speakingon the phone for an hour now. 6 You haven't waiting for a bus for ten minutes only. 7 Nelly and Mary haven't doing the shopping since early morning. 8 It hasn't snowing since last night. 9 Jack and his friend haven't riding bikes for three hours now. 10 The teacher hasn't explaining a grammar rule since the beginning of the lesson.

1. I have been reading this book for three days.

I have not been reading this book for three days.

Have I been reading this book for three days?

2. We have been playing volleyball for twenty minutes.

We have not been playing volleyball for twenty minutes.

Have we been playing volleyball for twenty minutes?

3. She has been cleaning the flat for more than an hour.

She has not been cleaning the flat for more than an hour.

Has she been cleaning the flat for more than an hour?

4. Peter has been swimming for half an hour.

Peter has not been swimming for half an hour.

Has Peter been swimming for half an hour?

5. Ann has been speaking on the phone for an hour now.

Ann has not been speaking on the phone for an hour now.

Has Ann been speaking on the phone for an hour now?

6. You have been waiting for a bus for ten minutes only.

You have not been waiting for a bus for ten minutes only.

Have you been waiting for a bus for ten minutes only.