题目

小鼠的体色黑色和白色是一对相对性状，由两对独立遗传的等位基因E和e、F和f控制，其体色与基因关系如图1。现用两只纯合小鼠杂交，结果如图2。请回答下列问题： (除特殊说明外，每空1分，共11分) （1）体色性状是由基因通过_____                                  _____来控制的。 （2）根据图1和图2的杂交实验结果可判断E（e）基因位于__________（填“常”或“性”）染色体上。由图2杂交实验可判断出母本的基因型是__________。 （3） 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 is the time now? A．9∶10 B．10∶00 C．9∶45 2．What does the woman think of her new roommate? A．She is polite． B．She is noisy． C．She is proud． 3．What does the woman want? A．Fruit． B．Candies． C．chocolates． 4．What does the woman want to be? A．A university student． B．A university teacher． C．A businesswoman． 5．What can we learn about the woman? A．She missed her home． B．She was tired of hotels． C．She enjoyed traveling． 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．How does the woman support herself through school? A．She has a scholarship． B．She does a part-time job． C．Her parents help her． 7．What does the do as a part-time job? A．He is a waiter． B．He is a cook． C．He is a manager． 听第7段材料，回答第8至9题． 8．What will the woman buy for the winter season? A．Some hats． B．Some sweaters C．Some shirts． 9．What is the weather like in winter in the city where the woman is studying? A．It rains a lot in the mountains． B．It's too cold to go outside． C．It often snows in the mountains． 听第8段材料，回答第10至12题． 10．Why doesn't the woman like her current apartment? A．It's too expensive． B．The neighbourhood is noisy． C．It's too far from school． 11．How much rent can the woman afford? A．Not more than＄200 B．Not more than＄300 C．Not more than＄400 12．What does the woman need? A．Some furniture． B．A car． C．A parking space． 听第9段材料，回答第13至16题． 13．For how many years has the man not played basketball? A．At least five years． B．At least twenty-five years． C．At least two years． 14．What does the woman advise the man to do? A．Do some physical exercise． B．See a doctor． C．Visit a fitness trainer． 15．What's the woman's advice on the woman's diet? A．She should eat less salt． B．She should eat fatty food． C．He should eat less fruit． 16．What is the probable relationship between the two speakers? A．Doctor and patient． B．Husband and wife． C．Coach and player． 听第10段材料，回答第17至20题． 17．What is the coldest month in the city? A．December B．March C．January． 18．What do people usually like to do in spring? A．Go on picnic． B．Go water-skiing． C．Drive into the mountains． 19．What is the summer season like in the city? A．Mid and windy． B．Hot and dry． C．Warm and rainy． 20．What is the man? A．He is a teacher． B．He is a weather reporter． C．He is a travel guide．