A．He visited a number of famous computer scientists．
B．He met with an entrepreneur named Jim Clark．
C．He sold a program developed by his friends．
D．He invested in a leading computer business．
A．They had confidence in his new ideas．
B．They trusted his computer expertise．
C．They were very keen on new technology．
D．They believed in his business connections．
A．Prestige advertising．
B．Institutional advertising．
C．Word of mouth advertising．
D．Distributing free trial products．