As the plane circled over the airport, everyone sensed that something was wrong.The plane was moving unsteadily through the air, and 1 the passengers had fastened their seat belts, they were suddenly 2 forward.At that moment, the air-hostess 3 .She looked very pale, but was quite 4 .Speaking quickly but almost in a whisper, she 5 everyone that the pilot had 6 and asked if any of the passengers knew anything about machines or at 7 how to drive a car.After a moment 8 , a man got up and followed the hostesssintosthe pilot's cabin.Moving the pilot 9 , the man took his seat and listened carefully to the 10 instructions that were being sent by radio from the airport 11 .The plane was now dangerously close 12 the ground, but to everyone's 13 , it soon began to climb.The man had to 14 the airport several times insgroupsto become 15 with the controls of the plane. 16 the danger had not yet passed.The terrible 17 came when he had to land.Following 18 , the man guided the plane toward the airfield.It shook violently 19 it touched the ground and then moved rapidly 20 the runway and after a long run it stopped safely.
1.A.although B.while C.therefore D.then
2.A.shifted B.thrown C.put D.moved
3.A.showed B.presented C.exposed D.appeared
4.A.well B.still C.calm D.quiet
5.A.inquired B.insured C.informed D.instructed
6.A.fallen B.failed C.faded D.fainted
7.A.best B.least C.length D.first
8.A.hesitation B.surprise C.doubt D.delay
9.A.back B.aside C.about D.off
10.A.patient B.anxious C.urgent D.nervous
11.A.beneath B.under C.down D.below
12.A.to B.by C.near D.on
13.A.horror B.trust C.pleasure D.relief
14.A.surround B.circle C.observe D.view
15.A.intimate B.familiar C.understood D.close
16.A.Then B.Therefore C.But D.Moreover
17.A.moment B.movement C.idea D.affair
18.A.impression B.information
C.inspections D.instructions
19.A.as B.unless C.while D.so
20.A.around B.over C.along D.above
1.【答案】A
【解析】本句意为尽管乘客们都已经系好安全带，他们还是被突然向前抛去。Although尽管，引导让步状语从句，符合句意。while当……时候;therefore因此;then接着、然后。
2.【答案】B
【解析】根据上题注释，这里选择throw扔、抛，最为合适。shift转移;move移动。
3.【答案】D
【解析】show展示、表明;present呈现、陈述，及物动词;expose暴露。appear出现，符合句意。
4.【答案】C
【解析】well健康的;still静止的;calm镇静的;quiet安静的。前句说她看上去脸色苍白，后半句进行转折，calm最符合句意。
5.【答案】C
【解析】inform通知、告诉，符合句意。inquire询问;insure保险、投保，常与aginst连用;instruct指示、指令。
6.【答案】D
【解析】fallen摔倒、跌落;fail失败;fade衰弱(视力、听觉、记忆);faint昏迷、晕倒。D项最符合句意。
7.【答案】B
【解析】at best最多、至多;at least至少;at length详细地;at first开始、最先。at least最符合句意。
8.【答案】A
【解析】hesitation犹豫;surprise吃惊;doubt疑问;delay延迟。hesitation最符合句意。
9.【答案】B
【解析】本句意为把飞行员挪到一边。aside意为一边、旁边，符合句意。back向后;about到处;move off指车辆启程。
10.【答案】C
【解析】本句意为：这个人坐到飞行员的座位上，认真听发自下面机场通过无线电发出的紧急指令。patient耐心的;anxious焦急的;nervous紧张的，都不符合句意。只urgent合适。
11.【答案】D
【解析】beneath和under为介词，后面必需接名词。down向下地，副词。below在下方地，副词，符合句意。
12.【答案】A
【解析】close与介词to连用，意为近的。其他介词不与close搭配。
13.【答案】D
【解析】horror恐惧;trust信任;pleasure愉快;relief(痛苦、忧虑)
解除。to one relief意为让某人松了一口气，最符合句意。
14.【答案】B
【解析】surround包围;circle盘旋;observe观察;view认为。此处选择circle，最符合句意。
15.【答案】B
【解析】be familiar with为固定搭配，意为熟悉，排除其他选项。
16.【答案】C
【解析】本句意为危险还没过去，与前句形成转折关系。选项中then表顺承，therefore表结果，but表转折，moreover表递进。
17.【答案】A
【解析】根据句意推断，空格处所填词应与when he had做同位语，故moment符合句意。movement运动，idea想法，affair事件。
18.【答案】D
【解析】following…这个分词的逻辑主语应为the man，本句意思应为，这个人遵照指令，驾驶飞机朝机场飞去。impression意为印象，information消息，inspections视察，instructions指令。
19.【答案】A
【解析】as当……的时候，符合句意。unless除非。while当……时候，它引导的从句动作时间比as引导从句动作的时间要长。So因此，表结果，不符合句意。
20.【答案】C
【解析】本句意为：飞机沿着跑道滑行了很长一段距离后，安全地停下来了。move along是沿着……移动的意思。around在……周围，over在……之上，above在……上方。只有along符合句意。
Most parents, I suppose, have had the experience of reading a bedtime story to their children.And they must have 1 how difficult it is to write a 2 children's book.Either the author has aimed too 3 , so that the children can't follow what is in his (or more often, her) story, 4 the story seems to be talking to the readers.
The best children's books are 5 very difficult nor very simple, and satisfy both the 6 who hears the story and the adult who 8 it.Unfortunately, there are in fact 8 books like this, 9 the problem of finding the right bedtime story is not 10 to solve.
This may be why many of books regarded as 11 of children's literature were in fact written for 12 ."Alice's Adventure in Wonderland"is perhaps the most 13 of this.
Children, left for themselves, often 14 the worst possible interest in literature.Just leave a child in bookshop or 15 and he will 16 willingly choose the books written in an imaginative way, or have a look at most children's comics, full of the stories and jokes which are the 17 of teachers and right-thinking parents.
Perhaps we parents should stop trying to brainwash childrensintos 18 our taste in literature.After all children and adults are so 19 that we parents should not expect that they will enjoy the 20 books.So I suppose we'll just have to compromise over that bedtime story.
1.A.hoped B.realized C.told D.said
2.A.short B.long C.bad D.good
3.A.easy B.short C.high D.difficult
4.A.and B.but C.or D.so
5.A.both B.neither C.either D.very
6.A.child B.father C.mother D.teacher.
7.A.hears B.buys C.understands D.reads
8.A.few B.many
C.a great deal of D.a great number of
9.A.but B.however C.so D.because
10A.hard B.easy C.enough D.fast
11.A.articles B.work C.arts D.works
12.A.grownps B.girls C.boys D.children
13.A.difficult B.hidden C.obvious D.easy
14.A.are B.show C.find D.add
15.A.school B.home C.office D.library
16.A.more B.less C.able D.be
17.A.lovingness B.interests C.objections D.readings
18.A.receiving B.accepting C.having D.refusing
19.A.same B.friendly C.different D.common
20.A.common B.avarage C.different D.Same
1.【答案】B
【解析】按意义选词，肯定知道。
2.【答案】D
【解析】按意义选词，写出一本好的儿童读物是多么的难，应选good。
3.【答案】C
【解析】目标定的太高，应选high。
4.【答案】C
【解析】根据前面的either推断，应选or。
5.【答案】B
【解析】依据后文nor应选neither，搭配一致。
6.【答案】A
【解析】后文who hears the story这一定语暗示应选child。
7.【答案】D
【解析】按意义选词，读书的成年人，应选reads。
8.【答案】A
【解析】根据unfortunately和in fact应选few。
9.【答案】C
【解析】得出结论，所以找一本合适的bedtime story这个难题不易解决，应选so。
10.【答案】B
【解析】根据9，应选easy。
11.【答案】D
【解析】应和句子前面many对应起来，选works，同时应和下文的"children literature"一致。
12.【答案】A
【解析】根据下文"许多孩子不愿看这一类的儿童文学作品"，所以，这些作品实际上是给成年人看的，因此，选grownps。
13.【答案】C
【解析】"Alice Adventure in Wonderland"这一点最为明显，应选obvious。
14.【答案】B
【解析】依据后文interest应选show。
15.【答案】D
【解析】home和office显然不行，school不够具体，太笼统，应选library。
16.【答案】A
【解析】根据词和文章的意义选择，更愿意选择用想象力的方法写成的书。
17.【答案】C
【解析】这些书是为老师和思想正统的父母所反对的，应选objections。
18.【答案】B
【解析】根据意义选词，接受我们对文学的兴趣，应选accepting。
19.【答案】C
【解析】毕竟孩子与成人有区别或不同，应选different。
20.【答案】D
【解析】既然孩子与成人有区别或不同，家长不应该期盼家长与孩子欣赏同样的(same)书.
Shopping habits in the United States have changed greatly in the last quarter of the 20th century. 1 in the 1900s most American towns and cities had a Main Street. Main Street was always in the heart of a town. This street was 2 on both sides with many 3 businesses.Here, shoppers walked into stores to look at all sorts of merchandise: clothing, furniture, hardware, groceries. 4 , some shops offered 5 .These shops included drugstores, restaurants, shoe repair stores, and barber or hairdressing shops. 6 in the 1950s, a change began to 7 .Too many automobiles had crowded into Main Street 8 too few parking places were 9 shoppers. Because the streets were crowded, merchants began to look with interest at the open spaces 10 the city limits. Open space is what their car driving customers needed.And open space is what they got 11 the first shopping centre was built.Shopping centres, or rather malls, 12 as a collection of small new stores 13 crowded city centres. 14 by hundreds of free parking space, customers were drawn away from 15 areas to outlying malls.And the growing 16 of shopping centres led 17 to the building of bigger and better stocked stores. 18 the late 1970s, many shopping malls had almost developed into small cities themselves. In addition to providing the 19 of one stop shopping, malls were transformed into landscaped parks, 20 benches, fountains, and outdoor entertainment.
1.A.As early as B.Early C.Early as D.Earlier
2.A.built B.designed C.intented D.lined
3.A.varied B.various C.sorted D.mixedp
4.A.Apart from B.However C.In addition D.As well
5.A.medical care B.food C.cosmetics D.services
6.A.suddenly B.Abruptly C.Contrarily D.But
7.A.be taking place B.take placeC.be taken place D.have taken place
8.A.while B.yet C.though D.and then
9.A.available for B.available to C.used by D.ready for
10.A.over B.from C.out of D.outside
11.A.when B.while C.since D.then
12.A.started B.founded C.set up D.organized
13.A.out of B.away from C.next to D.near
14.A.Attracted B.Surprised C.Delighted D.Enjoyed
15.A.inner B.central C.shopping D.downtown
16.A.distinction B.fame C.popularity D.liking
17.A.on B.in turn C.by turns D.further
18.A.By B.During C.In D.Towards
19.A.cheapness B.readiness C.convenience D.handiness
20.A.because of B.and C.with D.provided
1.【答案】B
【解析】as early as的意思为"同……一样早", early是副词，"早期"的意思，earlier是比较级"较早"的意思。
2.【答案】D
【解析】本句的意思是 "街道的两旁排列着很多各种各样的商店"，build的意思是"建造，修建"，design的意思是"设计"，intend"意思是"打算"，line是"沿……排列"的意思。
3.【答案】B
【解析】varied是 "变化多端"的意思，various为"各种各样的"，sorted意为"分类的"，mixedp意为"困惑的，迷惘的，不适应社会的"。本句意为"各种各样的商店"。
4.【答案】C
【解析】本句的意思是"除了各种各样的商店销售各种各样的商品之外，有些商店还提供服务"，apart from意为"除此之外"，后必须接名词或动名词，however是连词"然而"的意思，in addition可单独使用，意为"除此之外"，as well用在句末。
5.【答案】D
【解析】medical care意为"医疗护理"。food是"食物"，cosmetic是"化妆品"，service是"服务"，根据上题意思，service一词放在这里最合适。
6.【答案】D
【解析】本句的意思是"在五十年代，情况发生了变化"，有转折的意思。suddenly和abruptly都是"突然"的意思，contrarily指"相反地"，but是"但是"的意思,表转折。
7.【答案】B
【解析】take place只有主动语态，故可排除C，而begin to后应接动词不定式，只有take place"发生"可用。
8.【答案】A
【解析】此句中太多的汽车和太少的停车场有相对比较的意思，while是连词，有"而，却"的意思，表比较。yet"然而"，表转折，though"尽管，虽然"，表让步。
9.【答案】B
【解析】be available to sb.为固定搭配，意为"对某人来说可用的，可得到的"，本句意为"顾客可用的停车场地"，故选B。
10.【答案】D
【解析】本句意为"商人们开始对城市界限以外的开阔地感兴趣"，out of表示"……的外面"而outside指"超过某一个界限，范围等"。
11.【答案】A
【解析】这里是一个时间状语从句。因此用when(在……时候)。while指"在……期间";since表示"自从"，主句一般用完成时。
12.【答案】A
【解析】本句的意思是"购物中心是从聚集一些小的店铺开始的"，只有started as有此意。
13.【答案】B
【解析】本句意为"远离拥挤的市中心", out of指"在……之外"，away from表示距离，"远离"，next to指"靠近，下一个"，near是"近"的意思。
14.【答案】A
【解析】本句意为"被……所吸引"，surprise意为"使……惊奇"，delight意为"使……喜悦"，enjoy意为"欣赏,喜爱"。
15.【答案】D
【解析】本句意为"顾客从市区被吸引到城市以外的商业中心"，只有downtown"市区"符合此意。
16.【答案】C
【解析】本句意为"这些购物中心越来越大的名气反过来导致了更大，设备更好的商店的建成"。distinction声望;fame卓越，好名声;popularity名气很大，知名度很高;liking喜爱，喜好。故选C。
17.【答案】B
【解析】根据上题解释，in turn应为"依次"的意思，引申为"反过来"。
18.【答案】A
【解析】在这四个选项中，只有by所组成的时间状语与完成时连用，意为"到……为止",其他三个选项均被排除。
19.【答案】C
【解析】这里convenience与providing组成短语"提供方便，便利"，符合上下文义。
20.【答案】C
【解析】介词with在这里的意思是"带有"，本句意为"商业街被变成了带有长椅、喷泉及户外娱乐的风景优美的公园"。
From childhood to old age, we all use language as a means of broadening our knowledge of ourselves and the world about us.When humans first 1 , they were like newborn children, unable to use this 2 tool.Yet once language developed, the possibilities for human kind future 3 and cultural growth increased.
Many linguists believe that evolution is 4 for our ability to produce and use language.They 5 that our highly evolved brain provides us 6 an innate language ability not found in lower 7 . Proponents of this innateness theory say that our 8 for language is inborn, but that language itself develops gradually, 9 a function of the growth of the brain during childhood.Therefore there are critical 10 times for language development.
Current 11 of innateness theory are mixed, however, evidence supporting the existence of some innate abilities is undeniable. 12 , more and more schools are discovering that foreign languages are best taught in 13 grades.Young children often can learn several languages by being 14 to them, while adults have a much harder time learning another language once the 15 of their first language have become firmly fixed.
16 some aspects of language are undeniably innate, language does not develop automatically in a vacuum.Children who have been 17 from other human beings do not possess language.This demonstrates that 18 with other human beings isnecessary for proper language development.Some linguists believe that this is even more basic to human language 19 than any innate capacities.These theorists view language as imitative, learned behavior. 20 , children learn language from their parents by imitating them.Parents gradually shape their child's language skills by positively reinforcing precise imitations and negatively reinforcing imprecise ones.
1.A.generated B.evolved C.born D.originated
2.A.valuable B.appropriate C.convenient D.favorite
3.A.attainments B.feasibilityC.entertainments D.evolution
4.A.essential B.available C.reliable D.responsible
5.A.confirm B.inform C.claim D.convince
6.A.for B.from C.of D.with
7.A.organizations B.organisms C.humans D.children
8.A.potential B.performance C.preference D.passion
9.A.as B.just as C.like D.unlike
10.A.ideological B.biological
C.social D.psychological
11.A.reviews B.reference
C.reaction D.recommendation
12.A.In a word B.In a sense
C.Indeed D.In other words
13.A.various B.different C.the higher D.the lower
14.A.revealed B.exposed C.engaged D.involved
15.A.regulations B.formations
C.rules D.constitutions
16.A.Although B.Whether C.Since D.When
17.A.distinguished B.different
C.protected D.isolated
18.A.exposition B.comparison C.contrast
D.interaction
19.A.acquisition B.appreciation C.requirement
D.alternative
20.A.As a result B.After all
C.In other words D.Above all
1.【答案】B
【解析】此处意为：当人类刚刚开始进化，他们如同新生儿一样不会运用语言这种工具。
evolved逐渐发展，进化符合题意。generated生殖，发展;born (bear的过去分词)不能作谓语动词;originated起源，不能用first修饰。
2.【答案】A
【解析】根据语法分析，答案应用来修饰语言的。valuable珍贵的;appropriate合适的，适当的;convenient方便的，便利的;favorite最喜欢的。语言并不是人类选择的结果，而是人类在进化过程中慢慢发展起来的，对人类来说，应当是珍贵的。
3.【答案】A
【解析】此处意思是：语言的发展增加了人类未来的成就和文化进步的可能性。attainments成就;feasibility可行性;entertainments娱乐;evolution进化。
4.【答案】D
【解析】此处意为：许多语言学家认为进化使人们产生和具备了语言的能力。固定短语be responsible for对……负责，是……的原由。其它选项不与for搭配。
5.【答案】C
【解析】根据语法分析,空格后应是一个宾语从句，而A，B，D三项后都不能接从句做直接宾语。confirm(确认) 名词;inform(通知)sb.of sth.;convince(使某人确信) sb.of sth.
6.【答案】D
【解析】固定搭配provide sb.with sth.意为"向(人)提供(物)"
7.【答案】B
【解析】此处意为：我们高度发达的大脑是我们具备了其它低等动物所不具备的语言能力。显然，这里是把人和低等动物相比较。因此选organisms有机体，生物体。
8.【答案】A
【解析】此句意思是：人类的语言能力是与生俱来的，但语言本身也在逐渐发展，所以这种能力应该是潜在的。potential潜力;performance履行;preference偏爱;passion激情。
9.【答案】A
【解析】此句句义是：语言本身作为童年时期大脑生长的一种功能，其发展是缓慢的。as (作为，当作)合乎题意。Like作为介词的意思是"像……一样"。
10.【答案】B
【解析】此句意为：语言的发展有一个关键期，人体的成长是生物变化的过程。biological生物的;ideological思想上的;social社会的;psychological心理的。
11.【答案】A
【解析】此处意为：目前人们对"先天论"评论观点不一，但是支持某些天生能力的证据却是确凿无疑的。reviews评论;reference参考;reaction反应;recommendation推荐。
12.【答案】C
【解析】从11题可看出，作者是倾向于先天论的，为了进一步证明先天论是有道理的，作者选择了以学校为例加以说明，因此这里应填一个表示递进关系的词Indeed(甚至)。
13.【答案】D
【解析】此处意思是：越来越多的学校发现在什么年级学外语较容易，根据常识(低年级学外语较容易)以及后文的Young children often can learn several languages by being 14 to them, while adults…可以选定答案。
14.【答案】B
【解析】此处意为：通过接触多种语言，孩子们可以学会好几种语言。be exposed to是固定搭配，接触到。reveal(显露)sth.to sb，不合题意，因本题中的them指languages。其余选项不与to搭配。engage in从事;be involved in参与。
15.【答案】C
【解析】此句意思是：一旦母语的规则被深深印入脑海中，成年人就很难再学好另一种语言。rules规则，规律;regulations规定;formations构成，构造;constitutions宪法，章程。
16.【答案】A
【解析】分析上下文的逻辑关系，从句意思是：语言的某些方面肯定是先天的。主句意思是：语言不会在与人隔绝的状况下自行发展。前后应为转折关系。
17.【答案】D
【解析】此句意为：与人隔绝的儿童不能掌握好一门语言。isolated孤立的，与人隔绝的;distinguished区别的，杰出的;different不同的;protected受到保护的。
18.【答案】D
【解析】此句总结前几句，意为：必须通过与他人交往，语言才能够发展。interaction相互作用;exposition暴露;comparison比较;contrast对比。
19.【答案】A
【解析】根据分析，本句中的"this"和"even more basic"分别指代上句的"interaction with other human beings"和"necessary"，此处所填词对应上文中的language development。也就是说，language acquisition语言习得。appreciation欣赏,感激;requirement要求;alternative转移，转变，转换。
20.【答案】C
【解析】本句功能是以另一种方式解释前文中的"imitative, learned behavior.(模仿性的后天行为)"。In other words换言之，换句话说;As a result结果是;After all毕竟;Above all首先
Today the car is the most popular sort of transportation in all of the United States.It has completely 1 the horse as a 2 of everyday transportation.Americans use their car for 3 90% of all 4 business.Most Americans are able to 5 cars.The average price of a 6 made car was ,050 in 1950, ,470 in 1960 and up to ,750 7 1975.During this period American car manufacturers set about 8 their products and work efficiency.As aresult, the yearly income of the 9 family increased from 1950 to 1975 10 than the price of cars.For this reason 11 a new car takes a smaller 12 of a family total earnings today.In 1951 13 it took 8.1 months of an average family 14 to buy a new car.In 1962 a new car 15 8.3 of a family annual earnings, by 1975 it only took 4.75 16 income.In addition, the 1975 cars were technically 17 to models from previous years.The 18 of automobile extends throughout the economy 19 the car is so important to American.Americans spend more money 20 keeping their cars running than on any other item.
1.A.denied B.reproduced C.replaced D.ridiculed
2.A.means B.mean C.types D.kinds
3.A.hardly B.nearly C.certainly D.somehow
4.A.personal B.personnel C.manual D.artificial
5.A.buy B.sell C.race D.see
6.A.quickly B.regularly C.rapidly D.recently
7.A.on B.in C.before D.after
8.A.raising B.making C.reducing D.improving
9.A.unusual B.smallest C.average D.biggest
10.A.slower B.equal C.faster D.less
11.A.bringing B.obtain C.bought D.purchasing
12.A.part B.half C.number D.quality
13.A.clearly B.proportionally
C.percentage D.suddenly
14.A.income B.work C.plans D.debts
15.A.used B.spent C.cost D.needed
16.A.month B.year C.family D.year
17.A.famous B.superior C.fastest D.better
18.A.running B.notice C.influence D.affect
19.A.then B.as C.so D.which
20.A.to B.in C.of D.for
1.【答案】C
【解析】本句意为：汽车取代了马，成为日常交通工具。replace"取代";deny"否定、否认";reproduce"复制";ridicule"嘲笑"。故选replace。
2.【答案】A
【解析】句意见上题。means指"工具"，复数形式作单数理解，其他几项不符合句意。
3.【答案】B【解析】nearly"接近";hardly"几乎不";certainly"肯定";somehow"设法"。接近90%符合句意。
4.【答案】A
【解析】personal"个人的";personnel"人事的";manual"手工的";artificial"人造的"。本句意为：美国人使用汽车百分之九十是为了个人的业务。
5.【答案】A
【解析】根据上下文,本句的意思应该是"大部分的美国人能够买车"。
6.【答案】B
【解析】根据上下文这里应该是指"有规律"的生产。
7.【答案】B
【解析】指的是在1975年，与前面的in 1950对应。)
8.【答案】D
【解析】本句的意思是"汽车生产商开始改进产品，提高效率"，只有improve"改进"符合句意。Raise提高; make制造; reduce减少。
9.【答案】C
【解析】根据上下文，只能选average"平均"。Unusual不同寻常的。
10.【答案】C
【解析】本句的意思是"家庭收入的增长速度比汽车价格上涨的速度快"。
11.【答案】D
【解析】本句缺主语，只有A和D可作主语，但A项的意思不符。purchasing"购买"，符合句意。
12.【答案】A
【解析】本句指的是家庭收入较小的一部分，不是指具体的数目。
13.【答案】B
【解析】此处需要用副词，先排除percentage这个名词，其他选项中只有proportionally"相应、成适当比例的"符合句意。本句句意是，"在不同年代车价与家庭收入按比例增加"，其他两项意思不符。
14.【答案】A
【解析】本句指的是家庭收入，只有income符合句意。
15.【答案】C
【解析】在表示某物花费某人多少钱的意思时，若物为主语，动词要用cost。
16.【答案】A
【解析】本句指的是4.75个月的收入。
17.【答案】B
【解析】本句意为在1975年出产的汽车在工艺上比前些年出产的各种型号的汽车优越。be superior to"比……优越";be better后面要接than;famous"着名的";fastest"最快的"。
18.【答案】C
【解析】本句意为汽车的影响涉及整个经济。influence"影响";affect是动词，不符合语法;running和notice不符合句意。
19.【答案】B
【解析】这里as引导原因状语从句。
20.【答案】B
【解析】spend (in) doing sth.是固定搭配
Space is a dangerous place, not only because of meteors(流星) but also because of rays from the sun and other stars.The atmosphere again acts 1 our protective blanket on 2 .Light gets through, and this is essential 3 plants to make the food which we 4 .Heat, 5 , makes our environments tolerable and some ultraviolet rays(紫外线的) penetrate the 6 .Cosmic(宇宙的) rays of various kinds come 7 the air from outer space, but 8 quantities of radiation from the sun are screened off. 9 men leave the atmosphere they are 10 to this radiation; 11 their spacesuits or the walls of their spacecraft, if they are inside, 12 prevent a lot of radiation damage.Radiation is the greatest known danger to explorers in 13 .Doses of radiation are measured in 14 called"rems(雷目)".We all 15 radiation here on earth from the sun, from cosmic rays and from radioactive minerals.The"16"dose of radiation that we receive each year is about two millirems; it 17 according toswheresyou live, and this is a very rough estimate.Scientists have reason to think 18 a man can 19 far more radiation 20 without being damaged; the figure of 60 rems has been agreed.
1.A.for B.with C.on D.as
2.A.stars B.sun C.earth D.space
3.A.with B.from C.under D.for
4.A.use B.live C.eat D.get
5.A.again B.also C.besides D.too
6.A.environment B.space C.atmosphere D.earth
7.A.across B.to C.from D.through
8.A.valid B.enormous C.various D.proper
9.A.As soon as B.As well as
C.As much as D.As possible as
10.A.shown B.exposed C.faced D.covered
11.A.but B.because C.so D.so that
12.A.get B.make C.have D.do
13.A.earth B.atmosphere C.space D.environment
14.A.pieces B.units C.parts D.elements
15.A.receive B.accept C.bring D.catch
16.A.conventional B.commonC.general D.normal
17.A.shifts B.converts C.modifies D.varies
18.A.what B.which C.that D.why
19.A.put up with B.keep up with
C.come up with D.catch up with
20.A.from B.than C.as D.away
1.【答案】D
【解析】act as"充当、起……作用";act for"代表、代理";act on"按照"。本句意为大气层起到保护伞的作用。
2.【答案】C
【解析】见上题分析。
3.【答案】D
【解析】be essential for"对……来说是首要的、基础的"，固定搭配。
4.【答案】C
【解析】只有eat与先行词food和定语从句which we…搭配。
5.【答案】D
【解析】本句意为：热不仅使我们的生产环境温度适宜，而且紫外线也能穿透大气。also一般紧跟动词;besides一般用在句前;too可用在句中，用逗号隔开。
6.【答案】C
【解析】根据上题所讲，penetrate这个动词后面应接atmosphere"大气"这个名词。
7.【答案】D
【解析】这里的come through相当于penetrate，穿透。come across"偶遇";come to"来到";come from"来自"。本句意为：各类来自外部空间的宇宙射线穿透大气层……，故选come through。
8.【答案】B
【解析】Valid有效的;various各种各样的;proper合适的。在四个选项中只有enormous表示"大量的"意思。
9.【答案】A
【解析】as soon as"只要";as well as"除……之外";as much as"和……一样多";as possible as"尽可能的"。
10.【答案】B
【解析】be exposed to"暴露于"，show"展示";face"面对"。
11.【答案】A
【解析】本句前半句的意思是："人们一离开大气层就会接触射线";后半句意思是："他们的太空服和太空船会阻止射线造成的损害"。前后应该是转折关系，故用but。
12.【答案】D
【解析】Do 动词原型的结构表示强调谓语动词。
13.【答案】C
【解析】由radiation和explorers可推测，应选space(太空)。本句意为射线是探险者在太空遇见的已知的最大危险。
14.【答案】B
【解析】unit"单位、单元";element"元素";part"部分";piece"碎片"本句意为：射线的多少可以以雷目这个测量单位测量。
15.【答案】A
【解析】receive表示客观收到;accept表示主观接受。我们受到的辐射并非主观接受。
16.【答案】D
【解析】conventional"传统的";common"共同的、普通的";general"一般的、总体的";normal"正常的"。本句意为：我们每年接受的正常辐射量……，故选normal。
17.【答案】D
【解析】shift"移动";convert"转换";modify"修改";vary"变化"。根据句意，所处地点不同，所受辐射量也不一样……，故选varies.
18.【答案】C
【解析】本句应填入引导宾语从句的代词，而从句不缺少主语和宾语，因而不选择what和which，又加之主句是陈述语气，故选择that。
19.【答案】A
【解析】put up with"忍受"，固定搭配。keep up with和catch up with意为跟上,come up with意为提出。
20.【答案】B
【解析】more (radiation)后应加than。
One day a police officer manager to get some fresh mushrooms.He was so 1 what he had bought that he offered to 2 the mushrooms with his brother officers.When their breakfast arrived the next day, each officer found some mushrooms on his plate.
"Let the dog 3 a piece first,"suggested one 4 officer who was afraid that the mushrooms might be poisonous.The dog seemed to 5 his mushrooms, and the officers then began to eat their meal saying that the mushrooms had a very strang 6 quite pleasant taste.
An hour 7 , however, they were all astonished when the gardener rushed on and said 8 the dog was dead. 9 , the officers jumpedsintostheir cars and rushedsintosthe nearest hospital.Pumps (泵) were used and the officers had a very 10 time getting rid of the mushrooms that 11 in their stomachs.When they 12 to the police station, they sat down and started to 13 the mushroom poisoning.Each man explained the pains that he had felt and they agreed that 14 had grown worse on their 15 to the hospital.The gardener was called to tell the way 16 the poor dog had died."Did it 17 much before death?"asked one of the officers, 18 very pleased that he had escaped a 19 death himself."No,"answered the gardener looker rather 20 ."It was killed the moment a car hit it."
1.A.sure of B.careless about
C.pleased with D.disappointed at
2.A.share B.grow C.wash D.cook
3.A.check B.smell C.try D.examine
4.A.frightened B.shy C.cheerful D.careful
5.A.refuse B.hate C.want D.enjoy
6.A.besides B.but C.and D.or
7.A.later B.after C.past D.over
8.A.cruelly B.curiously C.seriously D.finally
9.A.Immediately B.Carefully C.Suddenly D.Slowly
10.A.hard B.busy
C.exciting D.unforgettable
11.A.stopped B.dropped C.settled D.remained
12.A.hurried B.drove C.went D.returned
13.A.study B.discuss C.record D.remember
14.A.this B.these C.it D.they
15.A.road B.street C.way D.direction
16.A.how B.in that C.which D.in which
17.A.suffer B.eat C.harm D.spit
18.A.to feel B.feeling C.felt D.having felt
19.A.strange B.painful C.peaceful D.natural
20.A.happy B.interested C.surprised D.Excited
1.【答案】C
【解析】从上文中managed to get(表示好不容易买到新鲜蘑菇)，及后文offer to (=express willingness to)可知此处应选C项，意为：对……感到满意(=satisfied with)。
2.【答案】A
【解析】有下文所发生的一切可知，此处应选A项，表示要与brother officers一起分享蘑菇的美味。
3.【答案】C
【解析】try a piece = try eating a piece.蘑菇的毒性是闻不出来的，故排除B项，另外可参见下文(这只狗吃了蘑菇)。
4.【答案】D
【解析】这位军官建议先让狗吃吃看，担心蘑菇会有毒，由此可见他很细心。
5.【答案】D
【解析】从下文"the officers then began to eat their meal"可知，这只狗enjoy (eating)his mushroom。
6.【答案】B
【解析】修饰名词taste的两个形容词之间存在转折关系，故应选but, besides是介词不能连接形容词。
7.【答案】A
【解析】An hour later = After an hour表示一个小时后。
8.【答案】C
【解析】警官们大为吃惊，因为园丁冲进来，很严肃很认真地说那条狗死了。
9.【答案】A
【解析】一听到狗死了，警官们立刻跳进车内，急驶向医院，C项表示没有思想就发生了，故应排除。
10.【答案】A
【解析】用洗胃器清除胃里的蘑菇，肯定是不好受的。Have a hard time (in) doing sth. = have difficulty (in) doing sth.。
11.【答案】D
【解析】remained in their stomachs = were left in their stomachs残留在胃里的蘑菇。
12.【答案】D
【解析】Return = go back表示从医院回到警察局。
13.【答案】B
【解析】有下文可知，他们回来后开始讨论所吃蘑菇的毒性。
14.【答案】B
【解析】these指代pains,而they指代警官。
15.【答案】C
【解析】on one way to在去某地的途中。
16.【答案】D
【解析】当先行词为way时，其定语从句引导词不用how,而应用in which。that在从句中也可表方式作状语，亦可将引导词省去。
17.【答案】A
【解析】警官们以为狗是中毒死的，所以问："狗死前，它遭受了很多痛苦吗?"
18.【答案】B
【解析】feeling作谓语动词asked的伴随状语。to feel可作目的状语，但不用逗号;felt缺少连词and,以构成并列谓语;having left表示发生在谓语的动作之前的动作，作原因或时间状语。
19.【答案】B
【解析】中毒死是痛苦的，且上下文中用了suffer一词。
20.【答案】C
【解析】园丁对警官问的问题感到吃惊，因为他知道狗死的真相——被撞死的。