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【单选题】
关于卡比多巴的叙述,下列哪项是错误的?A.
不宜通过血脑屏障
B.
是芳香氨基酸脱羧酶抑制剂
C.
可提高左旋多巴的疗效
D.
减轻左旋多巴的外作用
E.
有抗帕金森病的作用。
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举一反三
【简答题】广播新闻评论
【单选题】Why is it often difficult and expensive for marketers to attract new customers?
A.
customers are easily persuaded by promotions
B.
many times customers base buying decision solely on satisfaction with past purchases and do not consider other alternatives
C.
customes routinely ignore promotional attempts
D.
for most products the market is saturated, meaning there is not many new customers to attract
E.
customers tend to be distrustful of new products
【简答题】按照今天对新闻评论的理解，我国的新闻评论发端于什么时候?
【简答题】Marketers can use ___, ___ and ___ to occupy the target market.
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