说明：阅读下面的短文，从短文后所给各项的四个选项(A、B、C、D)中选出能填入相应空白处的最佳选项。
Americans travel by air in ( 1) the same way as Europeans and ( 2) travel by train. There are, in fact, not many railroad stations ( 3) in the USA, ( 4) the track (足迹，轨道，跟踪) is still being used, since most of America's freight (货运，运输) is still carried ( 5). As for passengers, there is a vast network (网状织物，网状系统) of airlines and airports in easy ( 6) of almost every American town. Airports, now the travel centers of the USA, ( 7) comfortable places ( 8) coffee shops and bars and clean restrooms.
Flying in America is ( 9) expensive than in many other countries, (10) the government subsidized (补助) air fares. Yet the different airlines are not state-owned and compete (竞争，竞赛) with one another for passengers.
Those who cannot (11) either train or plane take the Grey-hound (猎狗，卑鄙的人，骚扰) bus. (12) transport system (系统，制度) in the world carries so many passengers by night and by day. Drivers are (13) aid and have a wonderful safety record.
Europeans tend (14) their cars. But Americans treat their cars (15) as vehicles which are important (16) their lives — to take them to work, to shopping (购物) places, to picnics or to their friends. (17) when they take a vacation they rarely (稀少地，难得地) drive long distances.
There is (18) form of travel which is widely used in the USA, — the rented car. Every city and town (19) at least one car rented firm (公司), some of them are nationwide and have branches abroad (20).
1.all more as much
2.Japaneses the Japanese the Japan Japans
3.kept remained left remaining
4.for when although because
5.by train on train in train with train
6.reach grasp (抓紧，领会) master range
7.is are have been has been
8.beside by with have
9.most more less least
10.if because of when because
11.offer take reach afford
12.All None No Every
13.more greatly highly wonderfully
14.to love to loving to be loving loving
15.really only actually usually
16.for to with on
17.Except Because Besides /
18.other another the other some other
19.has had have has have had
20.other countries either also as well
答案:
DBCCA ABCCD
DCCAB BABCD
补充词汇：
ion n.离子
Irish adj.爱尔兰的，爱尔兰人的
n.爱尔兰人，爱尔兰语
iron n. 铁;铁制品;熨斗
v. 熨平
ironic(al) adj.反语的，冷嘲的，挖苦的;具有讽刺意味的
irony adj.反语，反语法，讥讽;嘲弄，意想不到的滑稽事
irrational adj.无理性的，失去理性的;荒谬的，毫不合理的
irregular adj.不规则的;无规律的
irregularity n.不规则;无规律
irrelevant adj.不相关的，不切题的;不重要的，无关紧要的，无意义的
irresistible adj.不可抗拒的;不能压制的;禁不住的
irrespective adj.不顾的;不考虑的;无关的
irrigate vt.灌溉;冲洗
irritable adj.易怒的，烦躁的，急躁的;过敏的
irritate v.激怒，使急躁;刺激，使难受
is v. 动词be第三人称单数现在式
Islam n.伊斯兰教信仰，伊斯兰教;伊斯兰教徒;伊斯兰教世界
island n. 岛;岛状物
isolate v.使隔离，使孤立;分解，离析
isolation n.隔离，孤立，隔绝，分离
isotope n.[物][化]同位素
issue n.出版，发行;(报刊等)期、号;问题，争论点;结果;(水;血等的)流出;子女，后嗣
v.发行，发布;发给;流出，放出
it pron. 它
Italian adj.意大利的;意大利语的;意大利文化的
n.意大利人;意大利语
italic adj.斜体的
n.斜体;斜体字母
Italy n.意大利(欧洲南部国家)
itch n.痒;热望，渴望
vi.发痒;渴望
vt.使发痒;使不悦，使烦恼
itching adj.发痒的;渴望的
item n.项目，条款;(消息、情报等的)一则，一条
itinerary n.旅行计划
adj.旅行的，旅程的，路线的
its pron. 它的
itself pron. 它自己
ivory n.象牙;象牙色，乳白色;象牙制品，仿象牙制品
adj.象牙制成的，似象牙的
ivy n.常春藤
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