Sales in 1990 fluctuated before dropping sharply, whereas in 2000 sales remained constant throughout the period.
According to the passage, who also use marketing techniques to achieve their goals?
____ (如果受难者早些知道消息), many lives could have been saved.
In comparison with those rich countries, __ will continue to predominate in most developing countries.
Initial marketing activities were based on the expansion of______.
_________(和一般流行的信念相反), vigorous exercise actually only decreases your appetite.