题目

听对话，回答下列各小题。答题完毕，请等待“嘀”的信号，进入第一篇短文。【1】What are Sandy's favourite vegetables?A.Tomatoes. B.Potatoes. C.Carrots.【2】How often does Sandy eat them?A.Four times a week. B.Five times a week. C.Every day. 答案：【答案】【1】C【2】A【解析】【原文】M: I like vegetables. What about you , Sandy?W: I love vegetables too, and I like carrots best.M: How often do you eat carrots?W: I eat them four times a week. How about you?M: I eat them every day.下列各方程组不是三元一次方程组的是A． B． C． D．