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。
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.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.
听第二段独白,回答第4-6题。
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.
听第三段对话,回答第7-9题。
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.
听第四段对话,回答第10-12题。
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.
听第五段独白,回答第13-15题。
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)
如图所示,水平面上有一个倾角为θ=30°的斜劈,质量为m。一个光滑小球,质量也为m,用绳子悬挂起来,绳子与斜面的夹角为a=30°,整个系统处于静止状态。
(1)分别画出小球和斜劈的受力图;
(2)求出绳子的拉力T;
(3)若地面对斜劈的最大静摩擦力等于地面对斜劈的支持力的k倍,为了使整个系
统始终保持静止,k值必须满足什么条件?
35.(18分)
以速度为=10m/s匀速行驶的汽车在第2s末关闭发动机,以后作匀减速直线运动,第3s内的平均速度是9m/s,试求:
(1)汽车作减速直线运动的加速度a;
(2)汽车在10s内的位移S。
34.(18分)
(1)(8分)在用打点计时器研究小车的匀变速直线运动的实验中:
① 某学生将打点计时器接到频率为50 Hz的交流电源上,实验时得到一条纸带。他在纸带上便于测量的地方开始,每隔4个打点标定一个计数点,共标出了A、B、C、D、E五个连续的计数点(相邻两个计数点间还有4个点没有标出)。测量时发现B点已模糊不清,于是他测得AC长为14.56 cm,CD长为11.15 cm,DE长为13.73 cm。则打下C点时小车的瞬时速度大小vC = m/s,小车运动的加速度大小a = m/s2 。(均保留3位有效数字)
② 如果在实验过程中,交流电源的频率变为52Hz,而实验者并不知道,仍然按50Hz来进行计算,则其得出的加速度a的测量值与真实值相比,应该 。(选填:“偏大”、“偏小”或“不变”)
③ 实验中如果是通过悬挂钩码(借助滑轮和细线)来牵拉,使实验小车做匀加速直线运动的,则是否需要记录所悬挂钩码的质量或重力? (选填:“需要”或“不需要”)
(2)(10分)如下图(a)所示,用铁架台、弹簧和多个已知质量且质量相等的钩码,探究在弹性限度内弹簧弹力与弹簧伸长长度的关系实验.
① 为完成实验,还需要的实验器材有: ;
② 实验中需要测量(记录)的物理量有: ;
③ 图(b)是弹簧所受弹力F与弹簧伸长长度x的F-x图线,由此可求出弹
簧的劲度系数为 N/m.图线不过原点的原因是由于 .
33.(18分)
广东省有着丰富的海洋资源。海水提取食盐和Br2以后的盐卤可以用来制备纯净的MgCl2或MgO。盐卤中含有Mg2+、Cl-,还含有少量Na+、Fe2+、Fe3+、和CO(NH2)2等。制备流程如下图:
(1)滤渣的成分是____________(填化学式);滤液Ⅱ中所含主要的杂质离子是 (写离子符号)。
(2)用NaClO除去尿素CO(NH2)2时,生成物除盐外,都是能参与大气循环的物质,则该反应的化学方程式为__________________________________;加入NaClO还能起 到的作用是________________________________________。
(3)直接将MgCl2•6H2O加强热能得到MgO,反应的化学方程式是__________________。
用MgCl2·6H2O制备无水MgCl2过程中,所需要的化学试剂是_____________。
(4)海水制溴过程中吸收潮湿空气中的Br2 是利用SO2 气体,SO2 吸收Br2的离子方程式是 。SO2 气体可来源于硫酸工业的尾气,同时,SO2 尾气也可用氨水吸收,作为制备化肥的原料,SO2 气体用氨水吸收得到的产物可能是_____________________________。
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,取该溶液进行以下实验:
(1)取pH试纸检验,溶液呈强酸性,可以排除 的存在。
(2)取出部分溶液,加入少量CCl4及数滴新制氯水,经振荡后CCl4呈紫红色,可以排除 的存在。
(3)另取出部分溶液逐渐加入NaOH溶液,使溶液从酸性逐渐变为碱性,反应过程中均无沉淀产生,则又可排除 的存在。
(4)取出部分上述碱性溶液加Na2CO3溶液后,有白色沉淀生成,证明有 的存在,又可以排除 的存在。
(5)根据上述实验事实可以确定,该溶液中肯定存在的离子是 ,还不能确定是否存在的离子是 。
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