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【简答题】
什么是“一个中心、两个基本点”?
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反馈参考答案：
举一反三
【简答题】Every Monday, Sally (drive) her kids to football practice.
【简答题】Complete the following sentences with the correct verb forms. 1. She’s a dietician — she ____________ (help) people to choose the right food. 2. The professor _____________ (type) his own letters whil...
【单选题】下列关于离子变形性的说法中,不正确的是:
A.
同一元素不同价态的阳离子中，所带电荷越多，极化作用越强
B.
同一元素不同价态的阴离子中，所带电荷越多，变形性越小
C.
阳离子的电荷越多，半径越小，极化作用就越强
D.
体积大的阴离子变形性较大
【简答题】Complete the following sentences with the correct verb forms. 1. She’s a dietician — she ____________ (help) people to choose the right food. 2. The professor _____________ (type) his own letters whil...
【简答题】听短文，完成表格 Name What activity How often Mary 1._______ every day Tina running 2._______ Sally 3._______ every Monday and Wednesday Mike 4._______ every weekend Peter swimming 5._______
【简答题】Fill in the blanks with the correct form of the given verb. Every Monday, Sally (drive)_____ her kids to football practice.
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