新概念英语第四册课后习题及答案

Structure 句型
Lesson 1
5 in some part of the world people are still____b__ to write
A incapable b impotent c enable d unable
6 they can preserve their history _____d_ down legends
A by hand b by handing c to hand d in hand
7the ____a__ why these legends are useful is that they tell us about migrations
A cause b effect c why d reason
8 there weren't ___a___ of then who could write down what they did.
A any b none c no one d no
Lesson 2
5 it would ____a__ impossible for us to live in this world if insects had no enemies.
A make it b stay c be d have it
6 we owe __c____ to the birds and beast who eat insects.
A a great deal b a lot of c a great many d much of
7 how many spiders are involved _____a_ this work on our behalf?
A at b for c in d to
8 there are many different ___a___ spiders
A sort of b kind of c type of d kinds
Lesson 3
5 earlier climbers liked summits ____c__ had never been climbed before.
A which b which they c that they d unless they
6 _____d_ single aim was getting to the top
A they're b there c their d theirs
7 ___a___ Zermatt and Chamonix,most places were unknown.
A except b unless c without d apart from
8 ____b__ were generally dirty and flea-ridden.
A the few inns that existed b inns like this
C such inns d few inns
Lesson 4
5 several cases have been reported in Russia recently of people ____b__ can read
A whom b that c which d they
6 one day she came into his office and put her hands on the door of the safe ____c__
A as it happened b by chance c perhaps d intentionally
7 _d_____ these tests were being conducted ,she was able to read a newspaper.
A during b on occasion c while d as if
8 Vera couldn't see with her skin ____a__ she was blindfold .
A only b except c as if d unless
Lesson 5
5 the problem,if there is one, __d____ by older people
A created b is created c creates d is creating
6 for one thing ,if you ___a___ a problem,you have a certain identity.
A were b being c had d are
7 ____c__ to be linked with life ,and the origin of things.
A they seem b it seems c this seems d what seems
8 it is ___b___ they are conceited and ill-mannered
A necessary b permissible c possible d likely
Lesson 6
5 if only ____a_ possible for the common people to meet each other.
A it would be b it could be c it were d it might be
6 you play __a__ win
A in order to b in order that c so that d for
7 the village green is the _a__ you pick sides.
A the place b the time c the reason d the cause
8 ____d__ the question of national prestige arises
A the moment b just c as long as d proveding
Lesson 7
5 not __b____ sound made by animals serves as language
A every b each c the whole d the entire
6 we have only to turn to that extraordinary discovery of echo-location in bats to see a case ____a__ the voice plays a strictly utilitarian role
A which b where c when d though
7 __c____ he shout in the vicinity of a wall, an echo will come back.
A should b if c when d though
8 ___d___ the echo-sounding apparatus was born.
A such b the way c that's how d like this
Lesson 8
5 american farmers can't export chickens to europe ___b___ differences in national regulations.
A through b according to c in respect of d because of
6 an electric razor from the eu __a____ sold in the us unless it meets us standards.
A oughtn't to be b can't be c shouldn't be d doesn't have to be
7 america and the eu ____a__ to reach a deal
A are still trying b slways try c tried d were trying
8 the details are __b____ that they may be hard-pressed to get a deal.
A so complex b enough complex c such complexity d too complex。