When software ____ have finished the ____ – first version – of a program, they ____ this on the internet and users are asked to ____ and to identify ____ or problems. Car designers use ____ (computer-assisted design / computer-assisted manufacturing) to help develop and test the first versions or ____ of the new product. Researchers in ____ may take years to develop new drugs, ____ or ____ them in trials to show not only that they are ____, but also that they are safe. Drugs need to be made in large numbers on an ____ before they can be sold. ____ is the process of making a product available, perhaps in particular places to test reaction. Product ____ is the moment of truth when a product is officially made available for sale. If a design ____ or design ____ is found in a product after it has been launched, the company may have to ____ it, asking those who have bought the product to return it, perhaps so that the defect can be corrected.

**Development and launch

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