Spyware and other forms of malware are the biggest online threat to your computer's （） nowadays. These malicious （） which get to your PC through freeware, shareware, commercial sites, deceptive pop-ups or in any other way, can record your surfing habits and sites you visit, share your personal information with their partners. Any personal （）, when in wrong hands, can leave you a victim of an "identity theft" by steeling your credit （）details, birth records and other （） information.

Any personal （）, when in wrong hands.

A. information

B. estate

C. life

D. existence

为发挥内燃、电力机车的优势，提高运输能力和运输效率，内燃、电力机车应有计划地逐步实行长交路、（）。

A、轮包结合制

B、随乘制

C、包乘制

D、轮乘制