A．rareB．electronicC．omfortableD．readyThese days,cars ar……

These days,cars are designed using computers.Let’s look at how a new car is created. First,several16talk about the new car and any good ideas that they have.Then they sit down at their computers and17 many sketches.The best two or three drawings are chosen and then more detailed drawings of 18are developed on the computer.You can change the size,shape or colour of any part on the computer to see19the car would look and then you can choose the best design. Both the inside and the outside of the car have to be designed.Part of the inside of the car is 20so that the designers can sit in it.They can feel if there is enough21inside and if they can reach22.Then some cars are built—there are more than 15,000 parts of a car to 23. When everything is known to be 24,the cars are made in the factory.Again,computers are used to make sure that all the parts are 25as they are needed.The factory usually stays open all through the night so that the car production never stops.

A．rare
B．electronic
C．omfortable
D．ready