大学体验英语听说教程4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

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Directions: Listen to the short dialogs, then choose the

correct answers to the questions. You will hear the recording twice. After the first playing, there will be time for you to choose the correct answers. Use the second playing to check your answers.

1. (Listen to the audio recording for the question.)

A. He asks the woman to call Mr. Owen.

B. He asks the woman to call Mr. Woods.

C. He asks that Mr. Woods call Mr. Owen.

D. He asks that Mr. Owen call Mr. Woods.

Your answer Correct answer

C C 2. (Listen to t

《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 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

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

新视野大学英语第二版听说教程4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 wedding dress

Culture Talk

T F F T

Listening and Speaking

1 They have high status.

2 They get the attentions of the public.

3 Using

新视野大学英语第二版听说教程4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 wedding dress

Culture Talk

T F F T

Listening and Speaking

1 They have high status.

2 They get the attentions of the public.

3 Using

新视野大学英语视听说教程4的听力原文及答案

Unit1 II. Basic Listening Practice 1. Script M: I‘m beside myself with joy. I‘m so lucky. Guess what? I‘ve won a lit of money in the lottery. W: Yeah? Well, you do know that money is the root of all evil, right? Q: What does the woman mean?

2. Script W: Mary was furious. Her son wrecked up her car. M: He shouldn‘t have driven a car without a driver‘s license. He s still taking driving lesson. Q: What do we know about Mary‘s son?

3. Script M: Susan, I hear you‘re going to marry that guy. Some people think