75．解析：这是一道计算题。成人的参观费用是$25，儿童是$12.5,两个大人和总共$62.5。

第2题(2006年普通高等学校夏季招生考试英语重庆卷)

Tragedy at the Circus

In yesterday’s circus(马戏团)show, a tiger suddenly attacked its trainer and had to be shot dead. As the circus packed up and left, circus officials said the show would go on, even without tigers. 　 However, the officials can’t simply turn a blind eye to the ethical problems left behind. Even before this tragedy(悲剧), animal rights activists protested against keeping wild animals in unnatural conditions and forcing them to suffer for the profit(利润) of circus organizers. 　 It is now time for us to take effective steps to make sure that circus animals are treated properly. ******************************* Circus Safe for Animals

Our circus recently suffered a most tragic event in its history. While we are thankful for the pity from the public, we are also astonished by the opinion expressed in “Tragedy at the Circus.” 　 First, our performing animals are not taken from the wild. As to the ethical problems. we always believe humans and animals can-and should-live together nicely. To us, the performing animals are representatives of their species(物种), and our circus is one of the only places left willing to support this special role of performing animals in the existence of the species. Those who argue that circus life is harmful to animals show little knowledge of these facts. Life in the “wild” is unsafe, but a continuous struggle for existence. To overlook these realities is the greatest fault against the animal kingdom. 　 This circus has proven that animals are stronger and smarter than we could imagine. Within the circus is a joyful atmosphere for both animals and humans: people are educated, and species saved. 67.What is the main purpose of the first passage? A.To show pity for the performing animals.　 　　　　　　 B.To express worries about animal trainers' safety.

C.To deal with the difficult situations of the circus. 　 D.To call for action to protect circus animals. 68.What will the circus most probably do? A.Take no notice of the tragedy.　　　　　　　　　　　　　　　tinue its performances. C.Use fewer wild animals.　　　　　　　　　　　　　　　　　　　　 D.Limit its profit. 69.What does the circus think of its performing animals? A.They are as clever as human beings. B.They struggle continuously with human beings for existence. C.They are helpful in saving their species. D.They have equally natural living conditions as wild animals. 70.What is the most probable relationship between the two passages? A.A public request and a newspaper report.　　　　　　　　 B.A newspaper article and a reply to it. C.Two parts of a newspaper article.　　　　　　　　　　　　　 D.Two newspaper reports.

答案 67.D 68.B 69.C 70.B

74．解析：这是一道细节题。从第一句“The Little Penguin has called Phillip Island home for untold generations”这些小企鹅在未知的年代就叫菲利普岛企鹅了，可知年代非常久远。

73．解析：这是一道主旨题。文中主要讲述了去参观菲利普岛企鹅的行程和价格，显然是一个旅游广告，所以主要面向旅游者。

75. How much would a couple with one child pay for a closer viewing tour?

A. $37.50.　　 　 　　　　　 B. $62.50.　　　 　　　　 C. $180.00.　　　 　　　　 D. $150.00.

答案 73.C74.A75.B

74. We can learn from the text that Little Penguins__________.

A. have been on Phillip Island for years　　　　　　　 B. keep a Guinness record for their size

C. are trained to practice diving for visitors　　　　 D. live in large groups to protect themselves

73. What kind of people is the text mainly written for?

A. Scientists.　　 　　　　 B. Students　　 　 　　　　 C. Tourists.　　　 　　　　 D. Artists.

21．(理)已知函数数列满足

(1)设求在上的最小值；

(2)证明：

(3)记证明：

(文)已知抛物线的顶点在坐标原点 焦点在正半轴上，倾斜角为锐角的直线过点。设直线与抛物线交于两点，与抛物线的准线交于点，其中

(1)若 求直线的斜率；

(2)若点在轴上的射影分别为且成等差数列，求

20．(理)椭圆的长轴为短轴的倍，直线与椭圆交于两点，为椭圆的右项点，

(1)求椭圆的方程；

(2)若椭圆上两点使求面积的最大值.

(文)已知数列的前三项与数列的前三项对应相同，数列是等差数列，

且对任意的都成立.

(1)求与的通项公式；(2)是否存在使得？请说明理由.

19．(理)已知函数

(1)若在处取得极值，求的值；

(2)若以函数图像上任意一点为切点的切线的斜率恒成立，求正实数的最小值；

(3)在(1)的条件下，若关于的方程在上恰有两个不同的实根.求实数的取值范围.

(文)函数在处取得极值，其图象在处的切线与直线垂直.

(1)求的值；(2)时，恒成立，求的取值范围.

18．如图，在三棱锥中，平面点

分别为的中点.

(1)求证：平面

(2)求点到平面的距离；

(3)求二面角的大小.