问题
单项选择题
A majority of HDTV consumers could not enjoy high-quality digital pictures because ______.
A．they did not tune in to the right channel
B．they did not install the system
C．the market retailers created the confusion on purpose
D．the manufacturers did not have a uniform standard for their sets
答案
参考答案：B
解析：[分析] 细节题型。 根据第一段第三句Only a small percentage of the people who have purchased HDTVs, however, have actually hooked their TVs up to receive high-definition television digital signals．可知答案是B项。
