题目内容
问卷调查法是调查者用可控制测量的问卷对被调查者进行征答，从而收集到可靠的信息资料的方法。
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Listen to the following quotations and fill in the blanks with what you hear. Then read them aloud.[音频]1) The Master said, “To learn （1） is unavailing. To think （2） is dangerous.”2) The Master said, “The superior man is （3） in his speech, but （4） in his actions.”3) The Master said, “The wise take joy in water; the humane take joy in mountains. (5); the humane are tranquil. The wise enjoy; (6).4) The Master said, “Walking along with three people, my teacher is sure to be among them. I choose what is good in them and (7) it and what is not good and (8) it.”5) The Master said, “They (9) are not equal to those who love it, and they who love it are not equal to those (10).”
在强碱性介质中，钒(V)存在的形式是（ ）
在硝酸介质中，欲使 Mn2＋氧化为 MnO4－可加的氧化剂是
由于La系收缩，导致下列元素中性质相似的一组是（ ）
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