2013年秋季四川大学网络学院《《大学英语(三)》第一次作业答案
你的得分：100.0
完成日期：2014年01月10日19点58分
说明：每道小题括号里的答案是您最高分那次所选的答案，标准答案将在本次作业结束(即2014年03月13日)后显示在题目旁边。
一、单项选择题。本大题共40个小题，每小题2.5 分，共100.0分。在每小题给出的选项中，只有一项是符合题目要求的。
—I’d like to know something about your life in Paris.
—________________
( C )
You can tell me
I wonder if you can
I’ll tell you
I wonder if you could
—What do you want to do?
—________________.
( B )
No, I don’t want to do anything.
I want to watch TV for a change.
What do you want to do then?
How about having a picnic?
—Would you like to have dinner with me tonight?
—________________.
( C )
Yes, I would.
No, thank you.
I’d love to, but I have a meeting to attend tonight.
Sorry, I can’t
—Come to our house for a party, please.
—________________.
( C )
Here’s my address
I’m not busy
Oh, thank you for your kindness
See you at four tomorrow
—I wonder if you could help me.
—________________.
( D )
I could
Yes, I do
No, not at all
Of course
—Would you mind shutting the door?
—________________.
( B )
Yes, please.
Not at all
No, I’m sorry
All right
—Do you mind if I read the newspaper on the table?
—________________.
( B )
Good news for you
Go ahead, please
Yes, sure
No, I can’t
—Can I help you with your suitcase?
—________________.
( D )
I have no idea
No, no. I can carry it myself
That’s a good idea
Thank you. I can manage myself
—Will you do me a favor?
—________________.
( D )
My pleasure.
Yes, I do.
Yes, I will
I’d be glad to
—Excuse me, would you lend me your calculator?
—________________.
( A )
Certainly. Here you are
Please don’t mention it
It’s nothing
Yes, I have a hand
He was _______ all of his best friends. ( C )
laughed by
laughed at
laughed at by
laughing at
After the Minister of Education had finished speaking at the press conference, he was made _______ all sorts of awkward questions. ( D )
answer
answering
answered
to answer
The roof of our house is broken, so it needs _______. ( B )
repaired
repairing
being repaired
to repair
_______ a teacher in a university, it is necessary to have at least a master’s degree. ( A )
To become
Become
One becomes
On becoming
The doctor advised her _______ enough rest before going back to work. ( B )
get
to get
gets
got
The workers are busy _______ models for the exhibition（展览）. ( D )
to make
with making
being making
making
He spoke so loudly _______ be heard by all. ( C )
that could
in order
as to
to
It is necessary _______ a foreign language. ( B )
of college students to master
for college students to master
that college students master
that college students to master
Henry would never forget _______ his mother-in-law for the first time. He was so pleased with the gifts she brought for him. ( C )
meet
to meet
meeting
met
Do you know the man _______ under the apple tree? ( C )
lay
lain
lying
laying
_______ a reply, he decided to write again. ( C )
Not receiving
Receiving not
Not having received
Having not received
That T-shirt was so tight that he decided to have it _______. ( C )
be enlarged
enlarge
enlarged
to enlarge
_______ at such a time, his work attracted much attention. ( B )
To publish
Published
Publishing
To be published
_______ from space, we can find that our earth looks like a“blue planet”. ( B )
Seen
Seeing
Having seen
To see
The manager has his employees _______ a business report every week. ( D )
to write
written
writing
write
I found _______ pleasant walking along the river after supper. ( C )
this
that
it
which
You’d better take an umbrella with you _______ it should rain. ( B )
in case of
in case
because
when
_______ you have decided to get married, you should shoulder the family responsibilities. ( B ) Although
Once
Or
Unless
It _______ that I met one of my old classmates on my way home yesterday. ( D )
took place
occurred
broke out
happened
The old woman next door is very keen _______ growing roses. ( C )
to
with
on
at
The atmosphere _______ certain gases mixed together in definite proportions. ( C ) composes of
is made up
consists of
makes up of
He didn’t have time to read the report word for word. He just _______ it. ( A ) skimmed
observed
overlooked
glanced
He _______ at the thought of seeing the pretty girl again. ( B )
cheered off
cheered up
cheerful
cheered on
Knowing first aid (急救) is _______ to saving lives. ( C )
cure
cruel
crucial
crude
He _______ whether he should make one last attempt to save the man. ( D ) paused
stopped
waited
hesitated
John speaks French as fluently as he does German. ( C )
约翰会说法语,也会说德语。
约翰法语没有德语讲得好。
约翰法语和德语说得一样流利。
约翰在说德语的时候，也会同时说法语。
Tom was such a hardworking student that he soon came out first in the class. ( D ) 汤姆是如此勤奋的学生，他第一个从教室里走出来。
汤姆学习很勤奋, 他第一个交卷。
汤姆是个好学生，他成了班上第一名。
汤姆学习如此勤奋，以至于他不久就成了班上成绩最好的学生。
A lot of natural resources in the mountain area are to be exploited and used. ( A )
那个山区有许多自然资源有待于开发利用。
很多人到山区去开发和利用自然资源。
山区的许多自然资源已经被开发利用了。
山区的许多自然资源被掠夺了。
I would never stand in the way of my children becoming free and independent. ( C )
我是绝不会站在孩子门走向自由和独立的道路中间的。
我是绝不会阻碍儿女们，让自己变得自由和独立的。
我是绝不会阻碍儿女门走向自由和独立的。
我是绝对不会站在孩子们的立场，考虑他们如何变得自由和独立的。
To her relief, the doctor said she could resume working immediately after she left hospital. ( B ) 让她感到欣慰的时，医生说她马上就可以出院并继续工作。
让他感到欣慰的是，医生说她出院后可以马上恢复工作。
让她深信不疑的是，医生说她出院后马上可以恢复工作。
让她深信不疑的是，医生说可以让她马上出院继续工作。
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自控原理选择题
1.反馈控制系统又称为（B ） A.开环控制系统 B ．闭环控制系统 B.扰动顺馈补尝 D ．输入顺馈补偿 2.位置随动系统的主反馈环节是（A ） A ．电压负反馈 B ．电流负反馈 C ．转速负反馈 D ．位置负反馈 3.如果典型二阶系统的单位阶跃响应为减幅振荡(又称阻尼振荡)，则其阻尼比（C ） Aξ<0 Bξ=0 C0<ξ<1 D ξ≥1 4.G(s)= 1/[(S+1)(S+2)(S+3)(S+4)]环 节的对数相频特性的高频渐近线斜率为（D ） A -20d B B-40dB C-60dB D-80dB 5.某自控系统的开环传递函数G(s)= 1/[(S+1)(S+2)] ，则此系统为（ A ） A ．稳定系统 B ．不稳定系统 C ．稳 定边界系统 D ．条件稳定系统 6．若一系统的特征方程式为(s+1)2(s －2)2+3＝0，则此系统是（C ） A 稳定的 B 临界稳定的 C 不稳定 D ．条件稳定的 7.下列性能指标中的(D )为系统的稳态指标。 A.σP B.t s C.N D.e ss 8.下列系统中属于开环控制的为( C) A.自动跟踪雷达 B.数控加工中心 C.普通车床 D.家用空调器 9.RLC 串联电路的系统应为(D)环节。 A 比例 B.惯性 C.积分 D.振荡 10.输出信号与输入信号的相位差随频率变化的关系是(B )。 A.幅频特性 B.相频特性 C.传递函数 D.频率响应函数 1.奈奎斯特图分析闭环控制系统的 （A ）A.稳态性能 B.动态性能 C.稳态和动态性能 D.抗扰性能 2.有一线性系统，其输入分别为u 1(t)和u 2(t)时，输出分别为y 1(t)和y 2(t)。 当输入为a 1u 1(t)+a 2u 2(t)时(a 1,a 2为常 数)，输出应为（B ） A.a 1y 1(t)+y 2(t) B.a 1y 1(t)+a 2y 2(t) C.a 1y 1(t)-a 2y 2(t) D.y 1(t)+a 2y 2(t) 3.某串联校正装置的传递函数为 G c (S)=K S S T 1T 1+β+(0<β<1)，则该装置 是（ A ） A.超前校正装置 B.滞后校正装置 C.滞后超前 D.超前滞后校正装置 4.1型系统开环对数幅频渐近特性的 低频段斜率为（ B ） A.-40(dB/dec) B.-20(dB/dec) C.0(dB/dec) D.+20(dB/dec) 5.开环传递函数G(s)H(s)=) p s )(p s () z s (K 211+++，其中p 2>z 1>p 1>0，则实轴上的根轨迹（A ） A.（-∞，-p 2],[-z 1,-p 1] B.(- ∞,-p 2] C.[-p 1,+ ∞] D.[-z 1,-p 1] 6.设系统的传递函数为 G(s)=1 s 5s 2512 ++，则系统的阻尼比为 C. 21 7.设单位负反馈控制系统的开环传递函数G o (s)=) a s (s K +，其中K>0,a>0，则闭环控制系统的稳定性与（ D ） A.K 值的大小有关 B .a 值的大小有关 C.a 和K 值的有关 D.a 和K 值的无关 8. 在伯德图中反映系统动态特性的是 B. 中频段 9. 设开环系统的频率特性G(j ω)=2 ) j 1(1 ω+，当ω=1rad/s 时，其频率特性幅值G(1)=(D ) A. 1 B. 2 C.21 D. 41 10. 开环传递函数为G(s)H(s)=) 3s (s K 3+,则实轴上的根轨迹为( D )。 A.［-3,∞］ B. ［0,∞］ C. (-∞,-3) D. ［-3,0］ 1.实验中可以从( D )获取频率特性。A.稳定的线性和非线性系统 B. 不稳定的线性和非线性系统 C.不 稳定的线性系统 D. 稳定的线性系统2.传递函数的概念适用于（D ）系统。 A ．线性、非线性 B. 线性 非时变 C ．非线性定常 D. 线性定常 3.系统的动态性能包括（ B ）。 A 稳定性平稳性 B.平稳性快速性 C 快速性稳定性 D.稳定性准确性 4. 确定系统根轨迹的充要条件是C A 根轨迹的模方程B.根轨迹的相方程 C 根轨迹增益 D 根轨迹方程的阶次 5 ．正弦信号作用于线性系统所产生的频率响应是（ A ） A ．输出响应的稳态分量 B. 输出响应的暂态分 量 C ．输出响应的零输入分量 D. 输出响应的零状态分量 6．系统的传递函数完全决定于系统 的 ( C )。A ．输入信号 B.输出信号C.结构和参数D.扰动信号7．控制系统的相位稳定裕量反咉 了系统的 ( B )。A ．稳定性 B.稳态性能C.快速性 D.动态性能8．一般来说，系统增加积分环节，系统的稳定性将（ B ）。 A ．变好 B.变坏 C.不变 D.可能9．系统开环对数幅频特性L(ω)中频段主要参数的大小对系统的 （ D ）性能无影响。A.动态 B. 稳态 C. 相对稳定性 D. 响应的快速性10．反馈控制系统又称为（ B ） A ．开环控制系统 B ．闭环控制系统 C 扰动顺馈补偿 D 输入顺馈补偿 1.单位斜坡函数f(t)=t 的拉氏变换式F(s)=（ D ） A.s B.1 C ．S 2 D ． 1/S 2 2．单位抛物线输入函数r(t)的数学表达式是r(t)＝（D ） A ．at 2 B ．1/2 Rt 2 C ．t 2 3．当二阶系统特征方程的根为具有负实部的复数根时，系统的阻尼比C A ζ<0 B ζ＝0 C0<ζ<1 D ζ≥1 4．已知单位反馈控制系统在阶跃函数作用下，稳态误差e ss 为常数，则此系统为B ．I 型系统 5．设某环节的传递函数为G(s)＝1 21 +s ，当ω＝0.5rad ／s 时，其频率特性相位移θ(0.5)=(A) A ．－ 4π B ．－6π C ．6π D 4 π 6超前校正装置的最大超前相角趋D ．90°
四川大学软件工程硕士招生简章
四川大学软件工程硕士（MSE）上海班招生简章 （金融管理方向） 国家承认学位 自主命题、自主考试、自主划线、自主录取 四川大学是教育部直属全国重点大学，是国家“211工程”和“985工程”重点建设的大学。是由原四川大学、原成都科技大学、原华西医科大学三所全国重点大学于1994年4月和2000年9月两次“强强合并”组建而成。 四川大学软件学院是教育部、原国家计委批准的35所国家级示范性软件学院之一，成立于2001年12月，是为了适应我国经济结构战略性调整的要求和软件产业发展对人才的迫切需要而建立的，旨在支持国家“以信息化带动工业化”的战略部署，通过培养具有国际竞争力的高水平实用型、复合型软件人才，为我国软件产业发展带来新的推动力，实现我国软件产业跨越式发展。 四川大学群贤英才 百余年来，学校先后汇聚了历史学家顾颉刚、哲学家冯友兰、文学家李劼人、美学家朱光潜、物理学家吴大猷、生物学家童第周、植物学家方文培、卫生学家陈志潜、数学家柯召等大师。历史上，吴玉章、张澜曾执掌校务，共和国开国元勋朱德、共和国主席杨尚昆、文坛巨匠郭沫若和巴金、一代英烈江竹筠（江姐）和毛英才等都曾在川大求学。 一、培养目标 四川大学软件工程硕士（MSE）是面向国民经济信息化建设和发展需要、面向企事业单位对软件工程技术人才需求培养的高层次实用型、复合型软件工程技术和软件工程管理人才。 二、培养方案 三、报考条件 1、具有国民教育系列大学本科毕业学历且获得学士学位的人员（特别优秀的无学士
学位者可特殊考虑，不超过报考总人数的10%）。 2、原所学专业和毕业年限不限。 四、考试与录取 1、入学考试由四川大学自主命题和组织，着重考查考生的理论应用、实践能力以 及综合素质。 2、考试科目包括基础知识笔试和专业综合知识面试。基础知识笔试：高等数学、 英语、C语言设计与数据结构基础；专业综合知识面试。 3、录取由四川大学根据笔试和面试成绩综合评定，择优录取。 五、报名方法 身份证复印件、本科学历和学位证书复印件各1份，1寸照片1张，《考生报名资格审查表》。报名费200元，考试费320元。 六、培养期限及费用 1、课程学习实行学分制，学习年限为2~4年。但从入学到获得工程硕士学位的年 限不得超过4年。其中软件工程实践时间不少于1年。 2、学费：32000元，管理费（异地）4000元；书本资料费另计。 七、学习安排 1、考试时间：每年两次(上下半年各一次)。 2、开班时间：秋季班（通过上半年考试的学员）在当年9月开始上课。 春季班（通过下半年考试的学员）在第二年的3月开始上课。 注：历届参加考前辅导班的考生，通过率均在90%以上。 八、学位授予 按培养方案的要求通过课程考试取得规定的学分和通过学位论文（论文形式可以是工程项目技术报告、关键技术的研究论文等）答辩，经四川大学学位评定委员会批准，授予工程硕士（软件工程领域）专业学位，颁发国家统一印制的工程硕士学位证书。 九、咨询和联系方式 上海地区唯一授权合作单位：上海浦江商务专修学院 （办学许可证号：教民号，网址：） 报名地址：上海市普陀区中山北路3553号伸大厦7楼（华东师范大学正门北侧）交通路线：轨道3号线、4号线金沙江路站下，公交：67路、754路、69路、765路、829路、909路、224路华师大站下车。 咨询电话：或转招生办公室张老师 24小时咨询热线：
北邮大学英语3阶段作业三
一、句子改错（共5道小题，共25.0分） 1. This is such a beautiful day that everyone around us feel like going out for a walk. A B C D A. A B. B C. C D. D 2. Neither John and his father was able to wake up early enough to catch the morning train. A B C D A. A B. B C. C D. D
3. He finds it easier to do the cooking himself than teaching his wife to cook. A B C D A. A B. B C. C D. D 4. Despite his old age, he is still very healthful and often works in the field. A B C D A. A B. B C. C D. D
5. The information which she was injured in the accident was given by Liz. A B C D A. A B. B C. C D. D 二、阅读理解（共1道小题，共50.0分）
1. Today, as in every other day of the year, more than 3,000 U.S. adolescents will smoke their first cigarette on their way to becoming regular smokers as adults. During their lifetime, it can be expected that of these 3,000 about 23 will be murdered, 30 will die in traffic accidents, and nearly 750 will be killed by a smoking-related disease. The number of deaths attributed to cigarette smoking outweighs all other factors, whether voluntary or involuntary, as a cause of death. Since the late 1970s, when daily smoking among high school seniors reached 30 percent, smoking rates among youth have declined. While the decline is impressive, several important issues must be raised. First, in the past several years, smoking rates among youth have declined very little. Second, in the late 1970s, smoking among male high school seniors exceeded that among female by nearly 10 percent. The statistic is reversing. Third, several recent studies have indicate high school dropouts have excessively high smoking rates, as much as 75 percent . Finally, though significant declines in adolescent smoking have occurred in the past decade, no definite reasons for the decline exist. Within this context, the National Cancer Institute (NCI) began its current effort to determine the most effective measures to reduce smoking levels among youth. 1. According to the author, the deaths among youth are mainly caused by _____. A. traffic accidents B. smoking-related diseases C. murder D. all of these 2. Every day there are over _____young people who will become regular smoker. A. 75 B. 23 C. 30 D. 3,000 3. By "dropout" (in paragraph 3) the author means______. A. students who failed the examination
大学英语三作业一
题目1 正确 获得1.00分中的1.00分 The children _______ play with them. 选择一项： a. are wanting that b. want me for c. want me to d. want that I 反馈 正确答案是：want me to 题目2 正确 获得1.00分中的1.00分 Don't laugh ________ people when they are _____trouble. 选择一项： a. in….at… b. at….at… c. on… in… d. at… in… 反馈 正确答案是：at… in… 题目3 正确 获得1.00分中的1.00分 - Why does he look sad? - There are so many problems ____________. 选择一项： a. remaining to settle b. remained settling c. remaining to be settled d. remained to be settled 反馈
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