题目

听下面一段较长对话，回答以下小题。【1】What is woman’s plan for this morning?A.To see around the city. B.To stay home. C.To do some sports.【2】What will Mark do this weekend?A.Attend a meeting. B.Pick up his parents. C.Show his boss around.【3】When will Mark’s parents most probably leave the city?A.This Saturday. B.Next Tuesday. C.Next Monday. 答案：【答案】【1】C【2】A【3】C【解析】【原文】W: Hi, Tom! Jason and I are going to play tennis at the park this morning. Would you like to join us?M: I’d love to, but I can’t.W: So what are you busy with？M: My friend Mark’s parents came to the city yesterday. He wanted me to show them around the city.W: Why doesn’t Mark do it?M: He was ordered to accompany his boss to a mee如右图是果蝇体细胞的染色体组成，以下说法正确的是（   ） A、染色体1、2、4、5组成果蝇的一个染色体组 B、染色体3、6之间的交换属于基因重组 C、控制果蝇红眼或白眼的基因位于2号染色体上 D、果蝇单倍体基因组可由1、2、3、6、7的DNA分子组成