What does the future hold for the problem of housing? A good deal depend, of course, on the meaning of 'future'. If one is thinking in S1.______ term of science fiction and the space age it is at least possible to assume S2.______ that man will have solved such trivial and earthly problems as houses. S3.______ Writers of science fiction have had little to say on the subject. They have conveyed the suggestion that men lived in great comfort, with every S4.______ conceivable gadget(小器具) to make life smoothly, healthy and easy. But S5.______ they have not said what his house will be made up. S6.______ Perhaps some new building materials, as yet unimagined, will have been discovered or invented; at least one may be certain that bricks and mortar(灰泥) will long have out of fashion. Scientists have already S7.______ pointed out that unless something is done either to restrict the world's rapid growth in population or discover and develop new sources of food, millions S8.______ of people will be dying of starvation or, at best, suffering from underfeeding by this century is out. But nobody has yet worked out any plan for S9.______ housing these growing populations. Admittedly, the worst situations will occur in the hottest parts of the world, there housing can be of light S10.______ structures, or in backward areas where standards are traditionally low. 【S1】