пример mobile telephones emit radiation, which might be dangerous. 1)it's difficult to find a job if you don't have basic computer 2)english has practically become the world's international 3)some countries refuse to sign a ban on producing chemical 4)the 2008 olympics will be held in

1. It's difficult to find a job if you don't have basic computer skills, which is very common job requirement now
2. English has practically become the world's international language, which is convenient for English-speaking counties.
3. Some countries refuse to sign a ban on producing chemical weapons, which is a very inhumane.
4. The 2008 Olympics will be held in China, which has long-lasted excellent records in sport.