大学体验英语听说教程2第四版答案

世纪英语听说教程3(第四版)

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Unit 3

Products, Quality and Price

世纪英语听说教程3(第四版)

Contents

Section One

Warm-up Activities

Section Two

In-class Activities

Section Three

After-class Activities

世纪英语听说教程3(第四版)

Warm-up Activities

Useful Expressions Task 1

Directions: Create dialogs with your partner, using the following expressions for products, quality and price. Present one of your dialogs to the class.

Starter ☆ I’ d like some information about your microwave ovens. Response ☆ Well, our most popular model is the B414. It’ s low in price and good in

《通信原理》习题第一章

第一章习题

习题1.1 在英文字母中E出现的概率最大，等于0.105，试求其信息量。 解：E的信息量：IE?log2

习题1.2 某信息源由A，B，C，D四个符号组成，设每个符号独立出现，其出现的概率分别为1/4，1/4，3/16，5/16。试求该信息源中每个符号的信息量。

解：

IA?log2IB??log21??log2P?E???log20.105?3.25b P?E?11??log2P(A)??log2?2bP(A)4

335?2.415b IC??log2?2.415b ID??log2?1.678b 161616

习题1.3 某信息源由A，B，C，D四个符号组成，这些符号分别用二进制码组00，01，10，11表示。若每个二进制码元用宽度为5ms的脉冲传输，试分别求出在下列条件下的平均信息速率。

（1） 这四个符号等概率出现； （2）这四个符号出现概率如习题1.2所示。

解：（1）一个字母对应两个二进制脉冲，属于四进制符号，故一个字母的持续时间为2×5ms。传送字母的符号速率为

RB?1?100Bd ?32?5?10等概时的平均信息速率为

Rb?RBlog2M?RBlog24?200bs

新视野大学英语第二版第四册听说教程答案

Unit One

Warming Up

F T NG

Listening

Understanding Short Conversations

1~5 A C B B D

6~10 B A C C D

Understanding a Long Conversation

1~5 A B A C B

Understanding a Passage

1~5 A A D B C

Understanding a Radio Program

1 married in St. Paul's Cathedral

2 was a guest at the wedding ceremony

3 wore a hat with flowers at the wedding

4 is remembered as having been naughty

5 was one of the designers of the weddi

《通信原理》习题第一章

第一章习题

习题1.1 在英文字母中E出现的概率最大，等于0.105，试求其信息量。 解：E的信息量：IE?log2

习题1.2 某信息源由A，B，C，D四个符号组成，设每个符号独立出现，其出现的概率分别为1/4，1/4，3/16，5/16。试求该信息源中每个符号的信息量。

解：

IA?log2IB??log21??log2P?E???log20.105?3.25b P?E?11??log2P(A)??log2?2bP(A)4

335?2.415b IC??log2?2.415b ID??log2?1.678b 161616

习题1.3 某信息源由A，B，C，D四个符号组成，这些符号分别用二进制码组00，01，10，11表示。若每个二进制码元用宽度为5ms的脉冲传输，试分别求出在下列条件下的平均信息速率。

（1） 这四个符号等概率出现； （2）这四个符号出现概率如习题1.2所示。

解：（1）一个字母对应两个二进制脉冲，属于四进制符号，故一个字母的持续时间为2×5ms。传送字母的符号速率为

RB?1?100Bd ?32?5?10等概时的平均信息速率为

Rb?RBlog2M?RBlog24?200bs

Unit 1

Outside view

Activity 1 3.5

Activity 2

one of the best universities most talented students

well-known around the world have open doors good social life you want it to be on another campus it's a fun place go to concerts during the week

Activity 3

library system online three / 3 four / 4 Brian

leisure purposes the libraries

listening in

Passage 1 1. 2 2. 6

3. 4. 5. 6.

1 5 3 4

2.Listen to Passage 1 again and rearrange the answers in the right column to match those questions in the left column.

Ceahbgdf

Passage

Unit 3 Home

Oral Practice

Step One – Brainstorming

You are going to tell your partner about your home. What items can be mentioned? Furniture

? couch (sofa) dresser ? closet bookcase ? shelves curtains ? carpet (rug) recliner ? coffee table end table ? lamp light switch ? build-in wardrobe fireplace ? armchair

Write the missing words

1. Rob and Jeannie are talking after cl

新标准大学英语视听说教程2——习题答案及听力原文

“新标准大学英语视听说教程答案” 涉及的版本较少，希望这份答案对你有大帮助。

Unit 1. Inside view 2.

They have decided on: 2, 5 and 5 5,

1, c; 2. C; 3. b; 4. A; 5.d 6.

1.Maybe I should 2. Supposing

3. everything’s organized, isn’t it 4. I’ve arranged for people to 5. I’ll count it all up 6. We’d better

7. I’ve got a suggestion 8. How about Outside view 2.

The true statements are 3 and 5 3.

1, one of the best universities 2. most talented students

3. well-known around the world 4. have open doors 5. good social life 6.you want it to be

Unit 3 Home

Oral Practice

Step One – Brainstorming

You are going to tell your partner about your home. What items can be mentioned? Furniture

? couch (sofa) dresser ? closet bookcase ? shelves curtains ? carpet (rug) recliner ? coffee table end table ? lamp light switch ? build-in wardrobe fireplace ? armchair

Write the missing words

1. Rob and Jeannie are talking after cl

Unit5 Outside

1.6517324

2. dawn service (1) remember (2) forget

died in battle identified

one unshakable truth conflicts

around the world remembering go home 3. celebrate When Since From

Whose one held those a few will gather Listening in

1. businessman

11 years old first name his second name the same age as terrible four years survives

his Japanese friend strength courage 2. bbbdc

1. agriculture 2. No

3. although 4. transport 5. tracking 6. support 7. physical 8. uniforms

9. fighter station 10. tra

电子教案22:26:00

光学教程(第四版) 光学教程(第四版)电子教案主 编: 宣桂鑫 策 划: 宣桂鑫 江兴方 脚本编写: 脚本编写:宣桂鑫 沈珊雄 蒋可玉 黄燕萍 制 作: 江兴方 宣桂鑫 黄燕萍 蒋可玉沈珊雄 欧阳吉芳 汤文娜 汤澄雷 江鸿高等教育出版社 高等教育电子音像出版社 201022:26:00

光学教程绪 论 第1章 第2章 第3章 第4章 第5章 第6章 第7章 第8章22:26:00

0.1 0.2 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 2.1 2.2 2.3 2.4 2.5 2.6 3.1 3.2 3.3 3.4 3.5 3.6 3.7 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.11 5.12 6.1 6.2 6.3 6.4 6.5 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 8.1 8.2 8.3 8.4 8.5 8.6 8.7