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The rate of unemployment in tourist areas is higher than in highly industrialized ones. Economists know this. = Every economist knows the rate of unemployment in tourists areas is higher than in highly industrialized ones.

It is well known to economists that the motives for nationalization are political as well as economic. = Every economist well knows motives for nationalization are political as well as economic.

As prices for fuel and electricity have risen, we expect an increase in all prices. = Expected an increase in all prices because prices for fuel and electricity have risen.

The degree of profitability in private enterprises is higher than in the public sector. Some economists think so. = Economists think profitability in private enterprises is higher than in the public sector.

Many experts think that the growing use of fertilizers and other chemicals presents a danger to the environment. = Considered growing use of chemicals presents a danger to the environment.