13．In general, the author seems to think that ________.
A．it is hard to have any privacy in a “Neighborhood Watch” area
B．the police should do more to protect people
C．“Watch” schemes are not very useful in reducing crime
D．the “Neighborhood Watch” schemes have been successful
解析：作者态度题。由三、四段讲的该计划带来的两个好处可知该计划效果非常好，所以答案选D项。
答案：D。
