【单选题】Many governments didn't launch anti-smoking campaigns because ______.
A.
tobacco taxes take up a large part of their revenue
B.
they are unusually subject to cigarette advertising
C.
they don't think tobacco can do harm to people's health
D.
they are innocent of the link between tobacco and disease
【简答题】Campaigns began in the early 1980s, when people ______ the negative effects
of CO 2 emission.A. realize B. realized C. have realized D. had realized
【单选题】Campaigns began in the early 1980s, when people ______ the negative effects of CO 2 emission.
【判断题】唯物主义一元论指的是,无论在自然领域,还是在社会历史领域,都主张彻底的唯物主义的立场。