Fill in the gap the computer mouse is a pointing device has a flat bottom?

THE COMPUTER MOUSE

When is a mouse not a mouse? When it sits on your desk and controls your on-screen cursor.The computer mouse is a pointing device (1)______which______ has a flat bottom, a shaped top with buttonson and – perhaps – a cable connecting the mouse to the computer. The mouse moves (2)______on______the surface of the desk, and the cursor copies this movement on the screen. The first computermouse had wheels that made contact (3)______with______ the working surface. The name ‘mouse’(4)______was______ adopted because all earlier models had a long cord, and this, together with the shape,made it look something (5)______like______ the furry little animal of the same name.The person who invented the mouse, and so was responsible (6)_______for_____ changing theway computers worked, was an American (7)______named______ Douglas Engelbart. In fact, he inventedmany devices, including ones attached (8)______to______ the chin or nose, to point at the screen.However, his computer mouse soon proved to be much more convenient and far simpler to use. Hisfirst attempt (9)______at______ producing a mouse was in 1964, but it was large, heavy and difficult tomove. A few years later, in 1968, his improved mouse (10)______made______ its first public appearance andrapidly became a huge success Complete each of the following sentences in such a way that it means exactly the same as the one printed before it. The word provided (if any) must not be altered in any way. 1. Celine has always been fond of classical music. (TASTE)

→ Celine has always had a taste for classical music.

. 2. They cannot watch this film because they are not adults yet. (UNDER)

→ Since they are under age, they cannot watch this film.

. 3. It’s a pity you didn’t ask us to spend more time with you.

→ If only you had asked us to spend more time with you.

4. She hasn’t spoken much since the day she met the President.

→ Little has she spoken since the day she met the President.

5. People think that someone started the fire deliberately.

→ The fire is thought to have been started debiberately.