题目

下列关于SiO2和CO2的叙述不正确的是        A．都是共价化合物        B．都是酸性氧化物，都能与强碱溶液反应        C．都能溶于水且与水反应生成相应的酸        D．SiO2可用于制光导纤维，干冰可用于人工降雨 答案：C补全对话（根据对话情景选择正确答案，每个选项只能用一次） A：Hi! Dandan, how are you today? B：___ 1___ What's wrong with you? You look thin? A：Yes, ___2___ B：Oh, really ? ___3___ A：Playing tennis helps me stay in shape. B：Do you like doing sports? A：___4___ B：I like sports too. A：___5___ B：I like swimming too. Maybe we can swim together next time. A：Great ! 1. ________2. ________3. ________4. ________5. ________