Every human being has unique arrangement of skin on his fingers and this arrangement is unchangeable. Scientists and experts hav

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问题     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.
【B15】

选项 A、make
B、take
C、do
D、adapt

答案B

解析 考查词语搭配。take a step“采取措施”,如That would be a rash step to take(那会是冒失的措施),符合题意,为正确答案。make a step“走一步”,不符合题意。
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