29. -31. sorulan, aşağidaki parçaya gore cevaplayiniz. Big technology comes in tiny packages. New cell phones, music players and personal computers get smaller every year, which means these electronics require even smaller components on the inside. Engineers are looking for creative ways to build these components, and they've turned their eyes to graphene, a super thin material that could change the future of electronics. "Graphene isn't just small; it's the thinnest possible material in this world," says Kostya Novoselov, a scientist who studies graphene at the University of Manchester in the United Kingdom. He calls it a "wonder material." It's so thin that you would need to stack about 25,000 sheets just to make a pile as thick as a piece of ordinary white paper. If you were to hold a sheet of graphene in your fingers, you'd have no idea because you wouldn't be able to see it. 29. According to the passage, one problem that electronics engineers face today is A) what components to take out so that they can make smaller computers B) how to fit smaller components into cell phones C) how to make components in electronic devices smaller D) to design an electronic device which would combine the functions of cell phones, music players and personal computers E) how to produce electronic devices in a shorter time to meet the increasing demand 30. It is pointed out in the passage that graphene __ A) was discovered by a British scientist who works at the University of Manchester B) has been used to build components of electronic devices for some time now C) is probably unique in that no other material in the world is as small as it is D) is such a thin material that it is invisible to the naked eye E) will probably be tried in cell phones first 31. The purpose of this passage is to inform the reader of ..... A) an extremely thin material likely to be a breakthrough in the world of electronics B) the new designs of cell phones and personal computers C) the results of the experiments with graphene conducted at the University of Manchester D) the difficulties of using as thin a material asgraphene in electronic components E) awonder material which vill enable computers