题目

下列说法正确的是 A．NH3和CH4的中心原子都是sp3杂化 B．基态原子的核外电子排布为[Kr]4d105s1的元素属于d区 C．SO2和CO2都是直线形分子，其中心原子都是sp杂化 D．电子由低能级跃迁至较高能级时，可通过光谱仪直接摄取原子的发射光谱 答案：AWith more forests _______, a huge quantity of good earth _______ every year.A. being destroyed; is being washed away B. are being destroyed; is being washed awayC. being destroyed; are being washed away D. destroyed; are being washed away