2022年大学英语竞赛

2006 National English Contest for College Students

Part I Listening Comprehension （ 25 minutes, 30 points ） Section A Short Conversations （ 6 points ）

Directions: In this section, you will hear 6 short conversations. At the end of each conversation, a question will be asked about what was said. Both the conversation and the question will be read only once. After each question, there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer. Then mark the cor

文档收集于互联网，已重新整理排版.word版本可编辑.欢迎下载支持. Directions: This part is to test your listening ability. It consists of 4 sections

Section A

Directions: This section is to test your ability to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is a recorded question. Both the dialogues and questions will be spoken only once. When you hear a question, you should decide on the correct answer from the 4 choices marked A)，B)，C) and D) given in your test paper. Then you should mark the corresponding le

文档收集于互联网，已重新整理排版.word版本可编辑.欢迎下载支持. Directions: This part is to test your listening ability. It consists of 4 sections

Section A

Directions: This section is to test your ability to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is a recorded question. Both the dialogues and questions will be spoken only once. When you hear a question, you should decide on the correct answer from the 4 choices marked A)，B)，C) and D) given in your test paper. Then you should mark the corresponding le

大学数学建模比赛

2001-2007年天津市大学数学竞赛试题集

（2009.3.10整理）

2001年天津市大学数学竞赛试题参考答案

（理工类）

一、填空：（本题15分，每空3分。请将最终结果填在相应的横杠上面。）

e2x 1

，x 0；

1. 函数f(x) 在（-∞，+∞）上连续，则a = 2 。 x

2 acosx x，x 0，

2. 设函数y = y(x) 由方程e

3

2

x y

cos(xy) 0所确定，则dyx 0 dx 。

3. 由曲线y x x 2x与x轴所围成的图形的面积A =

37

。 12

4. 设E为闭区间[0，4π]上使被积函数有定义的所有点的集合，则

E

cosxsinxdx

8

。 3

x2

y2 1，其周长为l ，则 xy x2 4y2 ds 5．设L是顺时针方向的椭圆

L4

。

二、选择题：（本题15分，每小题3分。每个小题的四个选项中仅有一个是正确的，把你认为“正确选项”前的字母填在括号内。选对得分；选错、不选或选出的答案多于一个，不得分。）

1. 若lim (x) u0且limf(u) A，则（ D ）

x x0

u u0

（A） limf[ (x)]存在； （B） limf[ (

大学数学建模比赛

2001-2007年天津市大学数学竞赛试题集

（2009.3.10整理）

2001年天津市大学数学竞赛试题参考答案

（理工类）

一、填空：（本题15分，每空3分。请将最终结果填在相应的横杠上面。）

e2x 1

，x 0；

1. 函数f(x) 在（-∞，+∞）上连续，则a = 2 。 x

2 acosx x，x 0，

2. 设函数y = y(x) 由方程e

3

2

x y

cos(xy) 0所确定，则dyx 0 dx 。

3. 由曲线y x x 2x与x轴所围成的图形的面积A =

37

。 12

4. 设E为闭区间[0，4π]上使被积函数有定义的所有点的集合，则

E

cosxsinxdx

8

。 3

x2

y2 1，其周长为l ，则 xy x2 4y2 ds 5．设L是顺时针方向的椭圆

L4

。

二、选择题：（本题15分，每小题3分。每个小题的四个选项中仅有一个是正确的，把你认为“正确选项”前的字母填在括号内。选对得分；选错、不选或选出的答案多于一个，不得分。）

1. 若lim (x) u0且limf(u) A，则（ D ）

x x0

u u0

（A） limf[ (x)]存在； （B） limf[ (

大学英语(3)课程作业_A 最终成绩：68.0

一 单选题

1. .You to the meeting this afternoon if you have something important to do.

needn't to come don't need come don't need coming needn't come

本题分值： 4.0 用户得分： 4.0

用户解答： needn't come 标准答案： needn't come

2. Mary went to ___ last night.

the house of her father hers father's house the house's her father her father's house

本题分值： 4.0 用户得分： 4.0

用户解答： her father's house 标准答案： her father's house

3. His suggestion is that we ___ them with their English.

should help helped

would h

大学英语写作锦囊

一、备用短语

1. 能源危机: energy crisis 35. 不顾风险: regardless of risks 2. 民族自豪感: national pride 36. 发展中国家: developing countries 3. 经济和技术的进一步发展: 37. 发达国家: developed countries further advances in economy and technology 38. 性别歧视: gender discrimination 4. 设法对付压力: manage one’s stress 39. 做一项试验: conduct an experiment 5. 非常流行: be very prevalent 40. 把理论应用于实践: apply theories to practice 6. 采取行动: take action 41. 跨国公司的兴起: the rise of multinational corporations 7. 保持积极的态度: keep a positive attitude 42. 在……方面落后: lag behind in… 8. 实现

05年大学英语试题

Part I Listening Comprehension ( 20% )

Section A ( 10 %)

Directions: In this section, you will hear 10 short conversations. At the end of each conversation, a question will be asked about what was said. Both the conversation and the question will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer. Then mark the corresponding letter on the Answer Sheet with a single line through the center. E

大学物理竞赛辅导

光

学1

2013年11月

一、几何光学1. [24届第11题] 顶角为θ的直角三棱镜，如左图所示。单色光经 空气从斜边射入后，在棱镜中的折射光线与棱镜底边平行。再 从棱镜出射后，相对原入射光线的偏向角为 ,则棱镜玻璃折射 率n=_______。假设 =θ =300,再将另一个材料相同的较大直 角三棱镜以右图所示方式拼接在左图三棱镜右侧。不改变原入 射光线方位，则从组合棱镜第一次出射到空气的光线相对原入 射光线的偏向角 ′=_______。

解：由折射定律

θi1 i2

900 '

sin i1 n sin i2 i1 i2 α

i1

i2 i3

i4300

sin(i2 α ) n sin i2

n

n

sin( i2 α ) sin(θ α ) n sin i2 sin θ

900

α i1 i4 900

'

sin i1 n sin i2

i1

i2 i3

i4300

n

n 3 i1 600 n sin i3 sin i4

i3 600

i4 900

∴ α ′ = 600

光从空间一点传播到 2. [第29届第9题] 费马原理的文字描述为_____________

2010 National English Contest for College Students (Level C - Preliminary) (总分：150分 时间：120分钟)

Part I Listening Comprehension

Section A (5 marks)

In this section, you will hear five short conversation. Each conversation will be read only once. After each conversation, there will be a pause. During the pause, read the question and the three choices marked A, B and C, and decide which is the best answer. Then mark the corresponding letter on the answer sheet with a single line through the centre.

1. What in the woman p