Practice 16: Cohesion and style.

    The director of research at the American DuPont Corporation, Wallace Carothers, invented nylon in 1935. He had studied chemistry and had specialised in polymers, which are molecules composed of long chains of atoms. Nylon was a strong and synthetic fibre, and it was first mass produced in 1939. This material is used to make a wide range of products, including stockings, toothbrushes, parachutes, fishing lines, and surgical thread.

1. Another issue to consider is the possibility of crime increasing.

2. Many are unemployed nowadays.

3. In the near future, a vaccine for malaria will be discovered.

4. At the end of the 20th century, the price of Japanese property notably decreased.

5. The numbers in that report cannot be trusted.

6. The severe inflation led to poverty and social unrest.

7. He was delighted to win the prize.

8. Students should be paid for their effort.

9. Women were allowed to vote in the late 20th century.

10. The main causes of the Russian revolution were...

    Worldwide, enrolments in higher education are increasing. In developed countries over half of all young people enter college, while similar trends are seen in China and South America. This growth has put financial strain on state university systems, so many countries are asking students and parents to contribute. This leads to a debate about whether students or society benefit from tertiary education.

    China is one developing country (but not the only one) which has imposed fees on students since 1997. The results have been surprising: enrolments, especially in the most expensive universities, have continued to rise steeply, growing 200 per cent overall between 1997 and 2001. It seems in this case that higher fees attract rather than discourage students, who see them as a sign of a good education. They compete more fiercely for places, leading to the result that a place at a good college can cost $5000 per year for fees and maintenance.