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顾小玉想了想，还是问了一句。Therefore, to sum up the distinguishing methods, the two main differences are:First, the standard of Putonghua should meet the "Putonghua Proficiency Test Grade Standard" issued by State Language Commission, Grade II, Grade B and above standards.Third, the builder model林聪更不解了：你不放心什么？周菡道：哎呀。　　检察官高剑在一起案件调查中发现，案件幕后主使竟与好友铁力有着千丝万缕的关系。高剑在案件调查中不断遇到阻碍，自己也险被对手陷害，在情与法的漩涡中，高剑坚持正义。Earlier this year, a blackmail software called "WannaCry" began to attack the Internet, from Chinese universities to British hospitals. In April this year, IDT, a Newark, New Jersey-based telecommunications company, suffered a similar attack, which was discovered by Goran Ben-Oni, the company's global chief operating officer. As Ben Oni said in an interview with the New York Times, he immediately realized that this blackmail software attack is different from other attacks against companies. It not only steals the information in the databases it infiltrates, but also steals the information needed to access these databases. This kind of attack means that hackers can not only obtain this information quietly, but also continuously monitor who accesses this information.