21世纪大学英语第一册练习册答案

21世纪大学英语第一册练习册答案 Unit 1

Part 1 Text Exercises I.

care—careful—carefully harm—harmful—harmfully help—helpful—helpfully

hope—hopeful—hopefully pain—painful—painfully skill—skillful—skillfully

success—successfull—successfully thank—thankful—thankfully

1 carefully 2 harmful 3 successfully 4 thankful 5 hopeful 6 careful 7 hopefully

8 helpful 9 painfully 10 painful 11 skillful 12 successful II

1 do well in one’s studies 2 for the first time 3 away from one’s family 4 compete with sb. for sth. 5 set a study program 6 decide when to go to bed

7 go to class on time 8 pass one’s exams with good grades 9 share one’s fears with sb.

10 look upon oneself from a different perspective 11 a person responsible for oneself

12 handle what is ahead III.

1 F 2 C 3 J 4 D 5 E 6B 7G 8A 9I 10H

IV. 1 how 2 making 3 chose 4 Shortly 5 under 6 on 7 hand 8 fairly

9 addition 10 with 11 share 12 own V.

Passage 1： 1B 2C 3A 4D 5C Passage 2： 1C 2A 3C 4A 5D VI.

1ask questions early 2 eat right 3 difficult assignments 4 to sit 5 work hard Part 2

I. 1A 2C 3D 4C 5 D 6C 7D 8C 9B 10 C 11important 12 pulled out 13 rushed 14 away from 15 in front of

II. 1B 2A 3B 4D 5C 6C 7D 8C 9B 10 C 11A 12 D 13 B 14 C 15 A 16 A 17 D 18 A 19 B 20 D 21 emotion 22decisions 23 had studied 24 talking 25 assign 26 driving

27 more warmly 28 addition 29 ability 30 would have

III. 1 A 2 B 3 D 4 D 5 B 6 All students 7 the Head

Librarian 8 be repaired 9 the Reading Room 10 June 15th, August 15th IV. 1 A 0.5 B 2 C 0 D 1 2 A 0.5 B 2 C 1 D 0

3 A 0.5 B 0 C 1 D2 4 A 2 B 1 C 0.5 D 0 5 明明：

今晚我不能和你去参加英语晚会，因为我要在家做功课，不然明天要被王先生批评的。

伟伟 August 5th, 2006

V. Dear Jiang Jun,

I am very glad to hear that you did very well in the College Entrance Examinations and will soon enter a leading university in Beijing. I feel very proud of you and I know that you will do even better in the days to come. Congratulations!

Yours Li Hua

Unit 2

Part 1 Text Exercises

I. graduate—graduation infect—infection create—creation decide—decision

educate—education produce—production assign—assignment develop—development

achieve—achievement announce—announcement

1 assignments 2 production 3 education 4 announcement 5 infection

6 achievement 7 decision 8 creations 9 development 10 graduation

II. 1 honor the blind / in honor of he blind 2 make items out of leather 3 take care of sb 4 be at the top of one’s class 5 develop an alphabet 6 deliver messages to soldiers 7 be made up of dots and dashes 8 keep the message secret 9 take up too much space 10 simplify the code

11 be on vacation at home 12 pick up a blunt awl 13 An idea comes to sb.…

III. 1C 2F 3A 4J 5H 6B 7D 8K 9E 10 I 11 G IV. 1 out 2cut 3slipped 4 best 5 infected 6 by 7 homework

8 assignments 9top 10 of 11 decided 12 when V. Passage 1：1 C 2B 3D 4C 5B Passage 2：1 A 2D 3B 4A 5C

VI.1 people’s hands 2 had been blind 3 in Helen’s hand 4 understood 5 write out Part 2 Exercise for PRECTCO

I. 1D 2A 3B 4D 5C 6D 7C 8B 9A 10D 11 filled 12 millions 13 stored 14 communicate 15 Its effect

II. 1B 2D 3A 4C 5C 6D 7D 8A 9B 10A 11B 12V 13A 14 B 15 D 16C 17A 18B 19C 20D

21 infection 22 reality 23 would to 24 simplifying 25 consumer 26 poisonous 27 is being built 28 had done 29 being discussed 30 is taken

III. 1 n.1 2 n.2 3 n.4 4 v. 5 n.1

6 a sales manager 7 better-paying job 8 Boston High School 9 radio and TV sets 10 was honorably discharged IV. 1 A (1) 2B (0.5) 3C (0) 4D (2) 2 A (0) 2B (0.5) 3C (1) 4D (2) 3 A (2) 2B (1) 3C (0.5) 4D (0) 4 A (2) 2B (1) 3C (0..5) 4D (0) 5 张小姐：

我得了重感冒，不能来校上课。特此请病假两天。附上医生的病假证明。

李红 V. Lost

On the afternoon of the 8th this month I lost my schoolbag on the play-ground because of my carelessness. Inside were several textbooks, a dictionary and a key to my bike. Would you please send it to me if you find it? My classroom is Room 202, Building 4. Many thanks.

Wang Ling June 9th, 2006

Unit 3

Part I Text Exercises I.

tardy—tardiness lonely—loneliness thoughrtful—thoughtfullness lazy—laziness

sad—sadness good—goodness careless—carelessness fit—fitness

1 laziness 2 goodness 3 sadness 4 Loneliness 5 tardiness 6thoughtfulness

7 fitness 8carelessness II.

1 get caught up in everyday business and concerns 2 take the time to do sth.

3 on the occasion of ... 4 past due 5 keep sb. on the straight path 6 give a hand

7 keep sb. from going hungry 8 teach by example 9 be grateful to sb. for.../ thank sb. for.

10 look back 11 on one’s own 12 right to the point III.

1 I 2C 3A 4H 5F 6B 7J 8D 9E 10G 11L 12 K IV. 1 without 2 too 3 hand 4 basics 5 on 6 from 7 by 8how 9to

10 back 11 with 12 bless V.

Passage1 1 C 2C 3D 4B 5A Passage 2 1A 2C 3C 4B 5C

VI. 1 I need him 2 make me food 3 said no 4 stay with me 5thank my Dad

Part II Exercises for PRETCO I.

1 B 2A 3B 4A 5B 6D 7C 8D 9A 10B

11 arranged 12 Major 13 position 14 In this case 15 rather than