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【单选题】
在点 处有定义是 在点 连续的 。A.
必要条件而非充分条件
B.
充分条件而非必要条件
C.
充分必要条件
D.
无关条件
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反馈参考答案：
举一反三
【简答题】“济南二安”是指——和——
【简答题】“历城二安”和“济南二安”是指 和辛弃疾。
【单选题】The writer's father believed that ______.
A.
you should only do things for which you have the ability
B.
only important jobs are worth doing well
C.
you should only attempt worthwhile jobs
D.
anything you do should be done to your best ability
【简答题】Do you have a pen pal? If not, do you want to have one? Now let me tell you how to get a pen pal. There are usually three steps(步骤)The first is greeting. In this step, you and your new friend will say...
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