第二节　 听取信息(共5小题；每小题1分，满分5分)

听下面一段对话，请根据题目要求，从所听到的内容中获取必要的信息，填入答题卡　 标号为16 ~ 20的空格中。听录音前，你将有10秒钟的阅题时间。录音读两遍，你将有60秒钟的作答时间。

第一节　 听力理解(5段共15小题；每小题2分, 满分30分)

每段播放两遍。各段后有几个小题, 各段播放前每小题有5秒钟的阅题时间。请根据各段播放内容及其相关小题, 在5秒钟内从题中所给的A、B、C项中, 选出最佳选项, 并在答题卡上将该项涂黑。

听第一段对话，回答第1 ~ 3题。

1. Which of the following does the man compare before making his decision?

A．Weight and cost. 　　　　　　　　　 B．Price and time. 　　　　　　 C．Forms and value.

2. How much does the man eventually pay?

A．￥7.30. 　　　　　　　　　　　　 　　　 B．￥11.70. 　　　　　　　　　　　 C．￥19.70.

3. What does the woman advise the man to do?

A．Put down a return address.　　 B．Buy some extra stamps.

C．Evaluate the object first.

听第二段对话，回答第4 ~ 6题。

4．What is the relation between the two speakers?

A．Close friends. 　　　 　　　 　　　 B．Teacher and student. 　　　 C．Mother and son.

5．What did the boy often do at school?

　 　　 A．He often stayed after class.　 　 B．He often fell asleep in class.

　 　　 C．He often made much noise in class.

6．Which of the following statement is true?

　 　　 A．The boy is encouraged because he won’t fail any exam.

　 　　 B．The boy shows interest neither in his lesson nor in work.

　 　　 C．The boy prefers to go to work rather than go to school.

听第三段独白，回答第7 ~ 9题。

7．How many ways are mentioned for the cities to get water?

A．Two. 　　　 　　　 　　　　　　　 　　　 B．Three. 　　 　　　　　　　　　　 C．Four.

8．Where is a dam usually built according to the speaker?

A．At the upper part of the river. 　　　 B．At the middle part of the river.

C．At the lower part of the river.

9．How is water made drinkable?

A．By testing it in the building.　 B．By piping it to the city.

C．By mixing added things with it.

听第四段对话，回答第10 ~ 12题。

10．Who would Sara prefer to live with?

A．A single person. 　　　　　　 　　　 B．A family. 　　　 　　　　　　　　　　 C．A couple.

11．Which of the following doesn’t Sara have to pay for?

A．Gas, electricity and phone bill.

B．Electricity, phone bill and water.

C．Water, electricity and gas.

12．What will Sara have to do before she moves in?

A．Deposit a certain sum of money.

B．Pay her rent for the first few months.

C．Buy some insurance just in case.

听第五段对话，回答第13 ~ 15题。

13．Where does the conversation most probably take place?

A．Outside a supermarket.　　 　　　 B．Near to a clothing store.　 C．In a leatherwork store.

14．What’s Mike’s main problem in buying a gift for his roommate?

A．The gift he wants for his roommate’s birthday isn’t available.

B．He doesn’t know what color of a gift his roommate likes.

C．He doesn’t know what gift to buy for his friend’s birthday.

15．What is Lily’s opinion of a gift?

A．A gift should be something to show off to others.

B．A gift should have some specific functions.

C．A gift should be both decorative and reasonable.

21．(本小题满分14分)

设函数…

(1)研究函数的单调性；

(广东省2010届高三六校第二次联考

20．(本小题满分14分)

已知函数，其中，为参数，且．

(1)当时，判断函数是否有极值；

(2)要使函数的极小值大于零，求参数的取值范围；

(3)若对(Ⅱ)中所求的取值范围内的任意参数，函数在区间内都是增函数，求实数的取值范围．

19．(本小题满分14分)

某分公司经销某种品牌产品，每件产品的成本为3元，并且每件产品需向总公司交元()的管理费，预计当每件产品的售价为元()时，一年的销售量为万件．

(1)求分公司一年的利润(万元)与每件产品的售价的函数关系式；

(2)当每件产品的售价为多少元时，分公司一年的利润最大，并求出的最大值．