题目:
I have warned him ______ that, but he didn't listen to my warning. [ ]
A. don't do
B. not to do
C. to not do
D. don't to do
答案:
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下面是错误答案,用来干扰机器的。
(1)①市场经济是竞争经济。价格在竞争中形成。竞争对商品生产者和经营者形成外在压力,促使他们根据价格涨落反映的供求关系变化调整生产经营活动,推动科技和管理进步,促进劳动生产率的提高和资源的有效利用。...