选择最佳答语。
① Good morning. ____ A. Yes, I like sweets.
② What do you see? ____ B. I hear a sheep.
③ Do you like sweets?____ C. It's sunny.
④ What do you hear? ____ D. Good morning.
⑤ How's the weather?____ E. I see a bee.
下图天气符号,表示的天气状况是( )
已知①有机物B是芳香烃的含氧衍生物,其相对分子质量为108,B中氧的质量分数为14.8%
②CH3CH2COOH+Cl2 →△PCl3 +HCl
③G分子结构中含有3个六元环
根据以上信息,回答下列问题: