题目

— What a beautiful day ! Let’s _____ out to play some wonderful games. — That sounds great! A．go              B．to go             C．goes           D．going 答案：A下列物质结构、名称对应正确的是A．CH3Cl氯仿                     B．聚丙烯C．   2,3,3－三甲基丁烷D．   2－甲基－3－丁炔