19. The writer believes that___________.
A. computer crimes can be eradicated
B. people don.t care much about computer viruses
C. people who introduce computer viruses are criminals
D. computer users must be on guard against computer crimes
出自:湖南大学-大学英语2

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块