Gadgets such as electric fans, mixers, toasters, drills, and flashlights have been common for a long time. Nowadays gadgets are becoming even more imaginative. There are gadgets to rock a baby to sleep, shine shoes, start a charcoal fire, and prepare fresh coffee in the morning before an alarm clock radio rouses a household. Gadgets can open and close garage doors, make ice cubes in a home refrigerator, and turn lights on at nightfall without help of a human hand. Housekeepers now have electric brooms, electric can openers, electric knives, doughnut makers, juicers, popcorn makers, and food processors -- machines that will knead dough, chop onions, grind meat, and slice vegetables for salad. An up-to-date refrigerator has a gadget that dispenses a selection of drinks and ice--available to anyone without opening the refrigerator door! Electric gadgets brush teeth, wash mouths, dial telephones, and warm seats. These are but a few examples of the many uses of new gadgets.

(from Susan S. Johnston et a1 : Keys to Composition)

Question: Complete this summary of the passage given above : Topic Sentence