I. Read"and"put the four paragraphs in order"and"match the pictures with them.
b. Our lives have been changed greatly by science"and"technology. The first telephone was invented before 1870 in America. Since then, people have been able to contact each other whenever they like,"and"wherever they are. Laptop computers had been made by 1990. They can be carried anywhere.
a. Great changes have also taken place in transportation"and"communication due to the development of science"and"technology. For example, people can be taken a long distance by high-speed trains"and"planes.
d. As far as communication is concerned, video phones"and"iPads are now used. So a person in Beijing can speak to another one in London face to face.
c. On the other hand, people’s hands have been greatly freed by machines in their houses. Clothes don’t need to be washed by"hand"due to the automatic washing machine. Even dishes can be washed by automatic machines. This is really good for lazy people."And"I believe more"and"more things will be made in the future to serve us in our daily life.