Every human being has unique arrangement of skin on his fingers and this arrangement is unchangeable. Scientists and experts have proved the 【B1】______ of finger-prints and discovered that no 【B2】______ similar pattern is【B3】______ from parents to children, 【B4】______ nobody knows why this is the【B5】______. The ridge 【B6】______ on a person' finger doesn't change 【B7】______ growth and is not affected by 【B8】______ injuries, Burns, cuts and other damages to the【B9】______part of the skin will be replaced【B10】______by a new one which bears the reproduction of the【B11】______pattern. It is only when the inner skin is injured that the arrangement will be【B12】______. Some criminals make use of this to【B13】______their own finger-prints【B14】______this is a dangerous and rare step to【B15】______. Finger-prints can be made very easily with a printer's ink. They can be recorded easily. With special method,【B16】______can be achieved successfully within a short time.【B17】______the simplicity and economy of this system, finger-print have often been used as a method of solving criminal cases. A【B18】______man may deny the charge but this may be【B19】______. His finger-prints can prove who he is even his【B20】______has been changed by age or accident.
【答案解析】解析：考查名词辨析。从上下文的意思来看，此处指一个人手指上脊的“构造”，B．structure“构造，结构”符合句意，为正确答案。construction“建造，建设”；location“定位置；位置”；position(1)“位置”：in position(在适当的位置)，out of position(不在适当的位置)；(2)“地位，职位，工作”。