Part A Short Conversations (10分)
Directions:In Part A, you will hear ten short conversations between two speakers. At the end of the conversation, a third voice will ask a question about what was said. The conversations and the questions will be spoken only once. After you hear a conversation and the question about it, read the four possible answers in your paper, and decide which one is the best answer to the question you have heard.
1. A. Asking the way. B. Showing the direction.
C. Heading a group. D. Advising the man.
2. A. Go to the party, then study.
B. Take an examination rather than go to the party.
C. Go to the party rather than study.
D. Study rather than go to the party.
3. A. Customer and shop assistant. B. Father and daughter.
C. Manager and secretary. D. Traveler and travel agent.
4. A. It’s larger than the old one. B. It’s near his friends’ flats.
C. It’s close to the school. D. It’s quieter than the old one.
5. A. Her family speaks English.
B. She likes English.
C. She cannot forget her English.
D. She lived in America when she was a child.
6. A. Read an article on political science. B. Read more than one article.
C. Present a different theory to the class. D. Choose a better article to read.
7. A. Lose another five pounds. B. Be glad she gained weight.
C. Gain ten more pounds. D. Buy some new clothes.
8. A. Her handbag. B. Her notebook. C. A novel. D. A lamp.
9. A. Botany B. Mathematics C. Acting D. Astronomy
10. A. Take a taxi. B. Stay at another hotel.
C. Ask the driver for directions. D. Walk to the hotel.
Part B Passages(6分)
Directions: In Part B, you will hear two passages, and you will be asked three questions on each of the passages. The passages will be read twice, but the questions will be spoken only once. When you hear a question, read the four possible answers in your paper and decide which one would be the best answer to the question you have heard.
Questions 11 through 13 are based on the following passage.
11. A. The substances in the soil and air. B. The sunlight.
C. The carbon dioxide and water. D. Sugar.
12. A. Sugars. B. Fats. C. Starches. D. Proteins.
13. A. The insects will be eaten by the woodpecker.
B. Some larger animals will eat the leaves.
C. The woodpecker will become food for some larger animals.
D. The starches and fats and proteins will be food for the insects and other larger animals.
Questions 14 through 16 are based on the following passage.
14. A. Food. B. Houses. C. Land. D. Gold.
15. A. They were afraid to work.
B. Work was necessary and honorable.
C. Men who worked had nothing to eat.
D. Luxury was as important as work.
16. A. Hard. B. Easy. C. Terrible D. Miserable
Part C. Longer Conversations(4分)
Directions: In Part C, you will hear a longer conversation. The conversation will be read twice. After you hear the conversation, you are required to fill in the numbered blanks with the information you have heard. Write your answers on your answer sheet.
Blanks 17 through 20 are based on the following conversation.
|
Where did the
man read about the woman? |
In the
_____17_____. |
|
What does the
woman plan to do right now? |
She is going
to give __18__concerts. |
|
What does the
woman complain about? |
She is getting
tired of ___19___. |
|
Why does the
woman work so hard? |
To start a
music school for __20__children. |
Complete the form. Write ONE WORD for each answer.
14、(09山東理)在某學校組織的一次藍球定點投藍訓練中,規(guī)定每人最多投3次;在A處每投進一球得3分,在B處每投進一球得2分;如果前兩次得分之和超過3分即停止投籃,否則投三次。某同學在A處的命中率
為0.25,在B處的命中率為
.該同學選擇先在A處投一球,以后都在B處投,用
表示該同學投籃訓練結束后所得的總分,其分布列為
![]()
求
的值;
求隨機變量
的數(shù)學期量
;
試比較該同學選擇都在B處投籃得分超過3分與選擇上述方式投籃得分超過3分的概率的大小。
13、(09浙江理)在
這
個自然數(shù)中,任取
個數(shù).
(I)求這
個數(shù)中恰有
個是偶數(shù)的概率;
(II)設
為這
個數(shù)中兩數(shù)相鄰的組數(shù)(例如:若取出的數(shù)為
,則有兩組相鄰的數(shù)
和
,此時
的值是
).求隨機變量
的分布列及其數(shù)學期望
.
12、(09天津理)在10件產(chǎn)品中,有3件一等品,4件二等品,3件三等品。從這10件產(chǎn)品中任取3件,求:
(I) 取出的3件產(chǎn)品中一等品件數(shù)X的分布列和數(shù)學期望;
![]()
(II) 取出的3件產(chǎn)品中一等品件數(shù)多于二等品件數(shù)的概率。
11、(四川理)為振興旅游業(yè),四川省2009年面向國內(nèi)發(fā)行總量為2000萬張的熊貓優(yōu)惠卡,向省外人士發(fā)行的是熊貓金卡(簡稱金卡),向省內(nèi)人士發(fā)行的是熊貓銀卡(簡稱銀卡).某旅游公司組織了一個有36名游客的旅游團到四川名勝旅游,其中
是省外游客,其余是省內(nèi)游客.在省外游客中有
持金卡,在省內(nèi)游客中有
持銀卡.
(1)在該團中隨機采訪3名游客,求恰有1人持金卡且持銀卡者少于2人的概率;
(2)在該團的省內(nèi)游客中隨機采訪3名游客,設其中持銀卡人數(shù)為隨機變量ξ,求ξ的分布列及數(shù)學期望Eξ.
10、(09陜西理)某食品企業(yè)一個月內(nèi)被消費者投訴的次數(shù)用
表示,椐統(tǒng)計,隨機變量
的概率分布如下:
|
|
0 |
1 |
2 |
3 |
|
p |
0.1 |
0.3 |
2a |
a |
(Ⅰ)求a的值和
的數(shù)學期望;
(Ⅱ)假設一月份與二月份被消費者投訴的次數(shù)互不影響,求該企業(yè)在這兩個月內(nèi)共被消費者投訴2次的概率。
9、 (09全國理)某車間甲組有10名工人,其中有4名女工人;乙組有5名工人,其中有3名女工人。先采用分層抽樣方法(層內(nèi)采用不放回簡單隨即抽樣)從甲、乙兩組中共抽取3名工人進行技術考核。
(Ⅰ)求從甲、乙兩組個抽取的人數(shù);
(Ⅱ)求從甲組抽取的工人中恰有1名女工人的概率;
(Ⅲ)記
表示抽取的3名工人中男工人數(shù),求
的分布列及數(shù)學期望。
8、(09遼寧理)某人向一目射擊4次,每次擊中目標的概率為
。該目標分為3個不同的部分,第一、二、三部分面積之比為1:3:6。擊中目標時,擊中任何一部分的概率與其面積成正比。
(Ⅰ)設X表示目標被擊中的次數(shù),求X的分布列;
(Ⅱ)若目標被擊中2次,A表示事件“第一部分至少被擊中1次或第二部分被擊中2次”,求P(A)
7、(09江西理)某公司擬資助三位大學生自主創(chuàng)業(yè),現(xiàn)聘請兩位專家,獨立地對每位大學生的創(chuàng)業(yè)方案進行評審,假設評審結果為“支持”或“不支持”的概率都是
,若某人獲得兩個“支持”,則給予10萬元的創(chuàng)業(yè)資助;若只獲得一個“支持”,則給予5萬元的資助;若未獲得“支持”,則不予資助,令
表示該公司的資助總額。
(1)寫出
的分布列;(2)求數(shù)學期望E
。
6、(湖南理)為拉動經(jīng)濟增長,某市決定新建一批重點工程,分別為基礎設施工程、民生工程和產(chǎn)業(yè)建設工程三類,這三類工程所含項目的個數(shù)分別占總數(shù)的.
、
、
,現(xiàn)在3名工人獨立地從中任選一個項目參與建設。
(I)求他們選擇的項目所屬類別互不相同的概率;
(II)記
為3人中選擇的項目屬于基礎設施工程或產(chǎn)業(yè)建設工程的人數(shù),求
的分布列及數(shù)學期望。
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