A. Such B. at C. as complex asA. a machine 1the human brainB. moving forward 2such a paceC. 3enormous numbers The human brain contains 10 thousand million cells and each of these may have a thousand connections. 4used to discourage us and cause us to dismiss the possibility of making a machine with humanlike ability, but now that we have grown used to 5we can be less sure. Quite soon, in only 10 or 20 years perhaps, we will be able to assemble 6, and if we can we will. It may then take us a long time to render it intelligent by loading in the in the right software or by altering the architecture but that too will happen.