There are records of fingerprints taken many centuries ago. The ancient Babylonians presse

There are records of fingerprints taken many centuries ago. The ancient Babylonians pressed the tips of their fingerprints into clay to record business trade. The Chinese used ink-on-paper finger impressions for business. However, fingerprinting wasn't used as a method for identifying criminals until the 19th century．
In 1858, Sir William Herschel was working as an official of the Hooghly district in Jungipoor, India．In order to reduce fraud（诈骗）, he had people living in the district record their fingerprints when signing business documents. A few years later, Scottish doctor Henry Faulds was working in Japan when he discovered fingerprints left by artists on ancient pieces of clay．This finding inspired him to begin investigating fingerprints．In 1880, Faulds wrote to his cousin, the famous naturalist Charles Darwin, and asked for help with developing a fingerprint classification system．Darwin refused, but sent the letter to his cousin, Sir Francis Gallon, who was an eugenicist (优生学家). Gallon began collecting fingerprints and eventually gathered some 8, 000 different samples to analyze. In 1892, he published a book called Fingerprints, in which he outlined a fingerprint classification system—the first existence．
Around the same time, Juan Vucetich, a police officer in Buenos Aires, Argentina, was developing his own version of a fingerprinting system．In 1892, Vucetich was called in to assist with the investigation of the two boys murdered in Necoche, a village near Buenos Aires. Their mother, Francisca Rojas, accused a neighbour named Velasquez. But when Vucetich pared the fingerprints found at the murder scene to those of both Velasquez and Rojas, they matched Rojas' exactly．She admitted her crime. This was the first time fingerprints had been used in a criminal investigation.Vucetich called his system parative dactyloscopy（指纹鉴定法）. It's still used in many Spanish-speaking countries．
Sir Edward Henry, in charge of the Metropolitan Police of London, soon became interested in using fingerprints to catch criminals. In 1896, he added to Gallon's technique, creating his own classification system, the Henry Classification System. It is the primary method of fingerprint classification throughout most of the world．
【小题1】Herschel had people record their fingerprints so as to    ．A．develop a fingerprinting systemB．prevent illegal businessC．put them on pieces of clayD．collect and study fingerprints【小题2】Who first came up with the idea of creating a fingerprint classification system?A．Herschel．B．Faulds．C．Gallon．D．Darwin．【小题3】The underlined word they in Paragraph 3 probably refers to     ．A．the fingerprintsB．the two boysC．the crimesD．the police officers【小题4】We can learn from the text that     ．A．Faulds collected many fingerprints while in Japan B．Henry's classification system is based on Gallon'sC．Darwin showed great interest in studying fingerprintsD．Vucetich's fingerprinting system is still used all over the world【小题5】What is the text mainly about?A．Different uses of fingerprints．B．The history of fingerprinting．C．Countries that first used fingerprints．D．The way to collect and analyze fingerprints．B