Отметьте предложения в present simple. 1. railways play an important part in the development of a country. 2. joint is the weakest part of the track. 3. we shall operate more powerful locomotives and have more comfortable cars in the future. 4. the engineers in different countries show much interest in the international railways exhibitions. 5. this branch line carries a small volume of traffic. 6. russia has a large network of electrified railways. 7. the moscow metro handles several millions of passengers a day. 8. the t-shaped rails are standard on modern tracks.