A An Unsuccessful Malware Attack B Cyber Crime:Hard to Prevent C A Widespread Computer Virus D WannaCry:New Malicious Software

A critical B flawless C defective D invulnerable

A pushing the self-destruct buttton in the software B purchasing its domain name accidemally C puUing the power plug found by chance D finding its web address intentionally

A revealed B recovered C rejected D released

A investments B behaviors C interests D policies

A cancels a number of computer files B successfully blackmails many users C affects numerous users worldwide D causes panic and chaos at local

A make some inferences B think like human beings C teach machines to learn D leam complex language

A exploit human potential B impair physical health C solve social problems D benefit human beings

A hopeful B expensive C inefficient D productive

A AI has made a great contribution to biology and medicine. B Whether AI can serve mucb to medicine is not yet clear. C Drug firms find it unaffordable to discover new products. D Pharmaceutical companies hope to find real gold in the tests.