1. Progress can have advantages and disadvantages. (This doesn't really make sense what are you trying to say?) 2. Machines now do the work which was previously done by humans (is this what you mean?) 3. Correct 4. Man invented machines in order to be served by them but often they become servants of the machine 5.We are now being recorded by cameras in stores and by speed cameras on the roads 6. This doesn't make sense...do you mean: computers are getting larger in size? 7. People faced many problems in the late 20th and early 21st century 8. Man always remains the master of his fate

1. Yes 2. You can say "and weigh 79kg" 3. No

Establishing a low-cost and profitable commercial trading platform, Shenzhen Western International Jewelry City held China's first gemstone and jade purchasing event on the 14th of September until the 22nd. This event attracted a lot of attention in the jewelry industry.