第二節(jié) 聽取信息(共5小題;每小題1分,滿分5分)
聽下面一段對話,請根據(jù)題目要求,從所聽到的內(nèi)容中獲取必要的信息,填入答題卡標號為16-20的空格中。聽錄音前,你將有10秒鐘的閱題時間。錄音讀兩遍,你將有60秒鐘的作答時間。
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Letters |
|
|
The mail |
Probably a lot of 16 |
|
The return name and address of the personal letter |
Pete Waters, 17 , Macon County, Georgia |
|
The relationship between Pete Waters and Grandpa |
18 in college |
|
The purpose of the letter |
To invite Grandpa to attend a 19 for making a 50-year 20 |
第一節(jié) 聽力理解(5段共15小題;每小題2分,滿分30分)
每段播放兩遍。各段后有幾個小題,各段播放前每小題有5秒鐘的閱題時間。請根據(jù)各段播放內(nèi)容及其相關(guān)小題,在5秒鐘內(nèi)從題中所給的A、B、C項中,選出最佳選項,并在答題卡上將該項涂黑。
聽第一段對話,回答第1-3題。
1.What is the man’s original opinion of the Ice Age people?
A.They were surprisingly advanced.
B.They were primary cave dwellers.
C.They were inventors of art and music.
2.How did the early Ice Age people keep warm?
A.They put heated stones on the roof.
B.They faced their houses towards the south.
C.They covered their houses with animal skins.
3.Why does the man want to read the article about the Ice Age people?
A.To impress his teacher.
B.To write his homework.
C.To fulfill his curiosity.
聽第二段獨白,回答第4-6題。
4.What does the speaker think the biggest problem is?
A.Packaging.
B.People spitting.
C.People not cleaning up after their dogs.
5.Why is spitting on the street bad?
A.Because it is dirty and can spread illnesses.
B.Because it is dirty and makes the street look bad.
C.Because it is not nice for others to see someone spitting.
6.What can you help do in your area if you walk or ride a bike more often?
A.Reduce using gases.
B.Cut down the pollution.
C.Improve the traffic.
聽第三段對話,回答第7-9題。
7.Where did the woman find the information about the job?
A.From an advertisement.
B.From her teacher.
C.In a newspaper.
8.When is the woman expected to work Monday through Friday?
A.4:00 p.m.to 6:00 p.m.
B.4:30 p.m.to 6:30 p.m.
C.6:00 p.m.to 10:00 p.m.
9.What can we learn from the conversation?
A.The woman studied Spanish in high school.
B.The cassettes in the yellow boxes are French lessons.
C.The man will contact the woman in two weeks.
聽第四段對話,回答第10-12題。
10.What are the two speakers talking about?
A.The National Day holiday.
B.A vacation plan.
C.A reservation in some cities.
11.How does the woman feel about Xi’an?
A.Beautiful but not big enough.
B.Worth going but too far away.
C.Beautiful but there are too many people.
12.What advice does the woman give in the end?
A.Going to a hot spring resort.
B.Reserving a room as soon as possible.
C.Going to a big city like Shanghai.
聽第五段獨白,回答第13-15題。
13.What should teens learn according to the talk?
A.How to manage some financial matters well.
B.How to be a financial manager.
C.How to help to support the family.
14.What does it mean by Warren Buffett’s statement?
A.The young generation do not know what they are doing.
B.If people do not understand how to look after their money, there will be economic crisis.
C.The new generation do not know they are taking risks.
15.What is the talk mainly about?
A.The current economic situation has a negative influence on America.
B.Teens should learn to handle money matters on their own.
C.Teens should be taught to be financially independent.
36.(18分)
如圖所示,水平面上有一個傾角為θ=30°的斜劈,質(zhì)量為m。一個光滑小球,質(zhì)量也為m,用繩子懸掛起來,繩子與斜面的夾角為a=30°,整個系統(tǒng)處于靜止狀態(tài)。
(1)分別畫出小球和斜劈的受力圖;
(2)求出繩子的拉力T;
(3)若地面對斜劈的最大靜摩擦力
等于地面對斜劈的支持力的k倍,為了使整個系
統(tǒng)始終保持靜止,k值必須滿足什么條件?
35.(18分)
以速度為
=10m/s勻速行駛的汽車在第2s末關(guān)閉發(fā)動機,以后作勻減速直線運動,第3s內(nèi)的平均速度是9m/s,試求:
(1)汽車作減速直線運動的加速度a;
(2)汽車在10s內(nèi)的位移S。
34.(18分)
(1)(8分)在用打點計時器研究小車的勻變速直線運動的實驗中:
① 某學(xué)生將打點計時器接到頻率為50 Hz的交流電源上,實驗時得到一條紙帶。他在紙帶上便于測量的地方開始,每隔4個打點標定一個計數(shù)點,共標出了A、B、C、D、E五個連續(xù)的計數(shù)點(相鄰兩個計數(shù)點間還有4個點沒有標出)。測量時發(fā)現(xiàn)B點已模糊不清,于是他測得AC長為14.56 cm,CD長為11.15 cm,DE長為13.73 cm。則打下C點時小車的瞬時速度大小vC = m/s,小車運動的加速度大小a = m/s2 。(均保留3位有效數(shù)字)
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② 如果在實驗過程中,交流電源的頻率變?yōu)?2Hz,而實驗者并不知道,仍然按50Hz來進行計算,則其得出的加速度a的測量值與真實值相比,應(yīng)該 。(選填:“偏大”、“偏小”或“不變”)
③ 實驗中如果是通過懸掛鉤碼(借助滑輪和細線)來牽拉,使實驗小車做勻加速直線運動的,則是否需要記錄所懸掛鉤碼的質(zhì)量或重力? (選填:“需要”或“不需要”)
(2)(10分)如下圖(a)所示,用鐵架臺、彈簧和多個已知質(zhì)量且質(zhì)量相等的鉤碼,探究在彈性限度內(nèi)彈簧彈力與彈簧伸長長度的關(guān)系實驗.
![]()
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① 為完成實驗,還需要的實驗器材有: ;
② 實驗中需要測量(記錄)的物理量有: ;
③ 圖(b)是彈簧所受彈力F與彈簧伸長長度x的F-x圖線,由此可求出彈
簧的勁度系數(shù)為 N/m.圖線不過原點的原因是由于 .
33.(18分)
廣東省有著豐富的海洋資源。海水提取食鹽和Br2以后的鹽鹵可以用來制備純凈的MgCl2或MgO。鹽鹵中含有Mg2+、Cl-,還含有少量Na+、Fe2+、Fe3+、和CO(NH2)2等。制備流程如下圖:
![]()
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(1)濾渣的成分是____________(填化學(xué)式);濾液Ⅱ中所含主要的雜質(zhì)離子是 (寫離子符號)。
(2)用NaClO除去尿素CO(NH2)2時,生成物除鹽外,都是能參與大氣循環(huán)的物質(zhì),則該反應(yīng)的化學(xué)方程式為__________________________________;加入NaClO還能起 到的作用是________________________________________。
(3)直接將MgCl2•6H2O加強熱能得到MgO,反應(yīng)的化學(xué)方程式是__________________。
用MgCl2·6H2O制備無水MgCl2過程中,所需要的化學(xué)試劑是_____________。
(4)海水制溴過程中吸收潮濕空氣中的Br2 是利用SO2 氣體,SO2 吸收Br2的離子方程式是 。SO2 氣體可來源于硫酸工業(yè)的尾氣,同時,SO2 尾氣也可用氨水吸收,作為制備化肥的原料,SO2 氣體用氨水吸收得到的產(chǎn)物可能是_____________________________。
32.(14分)
有一瓶澄清的溶液,其中可能含有H+、NH4+、Mg2+、Ba2+、Al3+、I-、NO3-、CO
、SO
、AlO
,取該溶液進行以下實驗:
(1)取pH試紙檢驗,溶液呈強酸性,可以排除 的存在。
(2)取出部分溶液,加入少量CCl4及數(shù)滴新制氯水,經(jīng)振蕩后CCl4呈紫紅色,可以排除 的存在。
(3)另取出部分溶液逐漸加入NaOH溶液,使溶液從酸性逐漸變?yōu)閴A性,反應(yīng)過程中均無沉淀產(chǎn)生,則又可排除 的存在。
(4)取出部分上述堿性溶液加Na2CO3溶液后,有白色沉淀生成,證明有 的存在,又可以排除 的存在。
(5)根據(jù)上述實驗事實可以確定,該溶液中肯定存在的離子是 ,還不能確定是否存在的離子是 。
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