题目

炒菜时，又加酒又加醋，可使菜变得味香可口，原因是（ ）A.有盐类物质生成                     B.有酸类物质生成C.有醇类物质生成                     D.有酯类物质生成 答案：D解析：酒就是乙醇，醋是乙酸，两者反应可以生成有香味的酯类物质。选词填空。Mr Bear works in an employment agency. He can help people find good jobs. The kangaroo comes. He can drive. He is 【1】. Mr Bear thinks he can be a good taxi driver. That’s a good 【2】. The frog comes. He likes singing. , but people don’t like his 【3】. Mr Bear says, “Don’t 【4】. You are good at swimming. You can be a good swimmer. ”We can find our 【5】 points. We can 【6】 a good job.