题目

已知某物种的一条染色体上依次排列着A、B、C、D、E五个基因片段，下面列出的若干种变化中，未发生染色体结构变化的是( )     A              B                  C                D 答案：D 听力(共两节，满分30分) 第一节(共5小题，每小题1.5分，满分7.5分) 听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 1．What will the woman do after class? A．See a teacher． B．Go to the beach． C．Talk with the man． 2．Why doesn’t the man wear a jacket? A．He forgot to bring it． B．He didn’t know it would be cold． C．He didn’t have any time to look for it． 3．How did the man get here? A．By train． B．By bus． C．By car． 4．What are the speakers mainly talking about? A．A letter． B．A village． C．A picture． 5．Where is the restaurant? A．On the left of Main road． B．On the right of Main Road． C．On the right of Grove Road． 第二节(共15小题：每小题1.5分，满分22.5分) 听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。 听第6段材料，回答第6至7题。 6．What is the relationship between the speakers? A．Husband and wife． B．Workmates． C．Classmates． 7．What does the woman advise the man to do? A．Find out where Terry is． B．Change his schedule． C．Use another desk． 听第7段材料，回答第8至10题。 8．Where does the conversation probably take place? A．At a police station． B．At a hospital． C．At the man’s． 9．How does the man feel about his wife? A．Disappointed． B．Angry． C．Anxious． 10．Why does the woman congratulate the man? A．He has just become a father． B．His wife is better． C．His father is fine． 听第8段材料，回答第11至13题。 11．Where does the man have to go first? A．To the swimming pool． B．To his grandparents． C．To the post office． 12．What does the woman ask the man to do at 1∶00? A．Return her books． B．Pick Fiona up． C．Wash her car． 13．When is the football match? A．At 2∶00． B．At 1∶30． C．At 12∶30． 听第9段材料，回答第14至16题。 14．What does the man think of the woman’s father’s idea? A．Unbelievable． B．Interesting． C．Reasonable． 15．What did the woman have to do at a mealtime? A．Put her hands on the table． B．Speak French． C．Sit silently． 16．What does the woman think was the good thing at school? A．Learning manners． B．Studying by herself． C．Going to church before class． 听第10段材料，回答第17至20题。 17．What can a member of the Blockbuster Club enjoy? A．Discounts to tickets． B．Some free food． C．Free drinks． 18．How often can a member get a Blockbuster Club magazine? A．Once a season． B．Once a month． C．Once a week． 19．What is in the Blockbuster Club magazine? A．Information on new films． B．Interviews with local fans． C．Activities for club members． 20．What should one do to join the club? A．Ask for an application form． B．Buy 6-month membership first． C．Call the hotline before September 15th．