题目

39．早在宋代，我国就产生了四大家鱼混养技术。下图表示某池塘中四大家鱼及其食物的分布，下列相关分析正确的是    A．四大家鱼在池塘中的分布现象是群落的水平结构 B．鲢鱼和鳙鱼混合放养时为互利共生关系 C．鲢鱼和鳙鱼、青鱼和草鱼在混合放养时都是竞争关系 D．若浮游动物大量死亡，鲢鱼数量在短时间会增加 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．How often does the woman go to visit her teacher? A．At least once a year． B．Once every two years． C．Twice a month． 2．What is the man going to do this weekend? A．work in his garden． B．Go to the picnic． C．Go to the company． 3．How does the woman's sister go to the university? A．On foot． B．By bus． C．By subway． 4．How many people are there probably? A．9． B．11． C．10． 5．What are the two speakers doing? A．Looking for a job． B．Having a holiday． C．Organizing a tour． 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．Why is the woman talking to the man? A．Because she wants to ask for a month's leave． B．Because she wants to give up her job． C．Because she wants to get better pay． 7．What will the woman do after her wedding? A．Have a long honeymoon． B．Be a teacher in the college． C．Be a housewife． 听第7段材料，回答第8至9题。 8．Where is the man? A．In a TV shop． B．In a movie theatre． C．In a hotel room． 9．What is the man's problem? A．He doesn't know how to work the TV B．He can't find a card box for the cards． C．He doesn't know how to follow the instructions． 听第8段材料，回答第10至12题。 10．What is the woman going to the UK for? A．To study here． B．To see her grandparents． C．To see her parents． 11．How long will she stay in the UK? A．Less than 8 weeks． B．More than 8 weeks． C．Only 8 weeks． 12．Who will go with the woman to the UK? A．Her husband． B．Her dog． C．Her son． 听第9段材料，回答第13至16题。 13．What is Jane doing now？ A．Typing a letter． B．Typing a paper for Helen． C．Typing her paper． 14．Where is the man going? A．To Paris． B．To New York． C：To London． 15．When will Jane probably meet Helen? A．During her trip． B．Tomorrow morning． C．At dinner time． 16．Why is the man looking for Helen? A．He wants to talk with her． B．He wants her to type papers for him． C．He wants her to hand in her paper． 听第10段材料，回答第17至20题。 17．Who is the speaker? A．A tour guide． B．A hotel manager． C．A weather reporter． 18．Which activity is NOT included in the holiday arrangement? A．Skiing． B．Sunbathing． C．Swimming． 19．How many sports are mentioned in the announcement? A．1． B．2． C：3． 20．What can we infer from this announcement? A．The weather is changeable． B．They are far away from any towns and cities． C．Local food is both cheap and delicious．