Today, most countries in the world have canals.Many countries have built canals near the coast, and parallel 1 the coast.Even in the twentieth century, goods can be moved more cheaply by boat than by any other 2 of transport.These 3 make it possible for boats to travel 4 ports along the coast without being 5 to the dangers of the open.Some canals, such as the Suez and the Panama, save ships weeks of time by making their 6 a thousand miles shorter.Other canals permit boats to reach cities that are not 7 on the coast, still other canals 8 landsswheresthere is too much water, help to 9 fields wherethere is not enough water, and 10 water power for factories and mills.The size of a canal 11 on the kind of boats going through it.The canal must be wide enough to permit two of the largest boats using it to 12 each other easily.It must be deep enough to leave about two feet of water 13 the keel of the largest boat using the canal.When the planet Mars was first 14 through a telescope, people saw that the round disk of the planet was criss-crossed by a 15 of strange blue-green lines.These were calledcanals 16 they looked the same as canals on earth 17 are viewed from an airplane.However, scientists are now 18 that the Martian phenomena are really not canals.The photographs 19 from space-ships have helped us to 20 the truth about the Martiacanals.
1.A.off B.with C.to D.by
2.A.way B.means C.method D.approach
3.A.waterways B.waterfronts C.channels D.paths
4.A.among B.between C.in D.to
5.A.revealed B.exposed C.opened D.shown
6.A.trip B.journey C.voyage D.route
7.A.lain B.stationed C.set D.located
8.A.escape B.drain C.dry D.leak
9.A.water B.wet C.soak D.irrigate
10.A.furnish B.afford C.offer D.give
11.A.focuses B.bases C.depends D.takes
12.A.cross B.pass C.move D.advance
13.A.down B.below C.beneath D.off
14.A.studied B.researched C.surveyed D.observed
15.A.few B.number C.deal D.supply
16.A.although B.because C.so D.if
17.A.that B.where C.when D.as
18.A.exact B.definite C.certain D.decisive
19.A.held B.taken C.got D.developed
20.A.find B.expose C.uncover D.discover
会吸烟的鱼:逗比渔夫恶作剧惹争议
新美元将出现女性头像
在马尔代夫海底餐厅与鲨鱼共进午餐
斯皮尔伯格新剧《传世》 不只是科幻
执子之手与子偕老 美伴侣同日离世
第一大战爆发100周年 世界不该这么快遗忘警示
平等幼儿园:瑞典学前班刻意“模糊”性别
研究:节食容易让人抑郁
法国女性6招教你如何优雅变老
一天一苹果真的预防痴呆么?
10招助你公众演讲
“撒切尔基因”让你每天睡眠只需四小时
幸福研究23岁和69岁的人最快乐
美军少将身亡 或遭阿富汗士兵枪击
中国西南部发生强烈地震,造成部分通讯中断
《记忆中的玛妮》或将是吉卜力最后一部电影
提高月收入的几种途径
坐直!改善你不良坐姿的小贴士
郭美美囚服照曝光 道歉还红会清白
消失的女孩:英国的女婴文化偏见
想当个好老板 做好这五点就行
卡塔尔客机遭威胁 英战机紧急护航
人类需要了解的有关抗埃博拉病毒药物的五件事
考古新发现 娘化推动人类进步?
支付宝每月一账单 网购一族有惊无喜
解密高科技蟑螂:最新救灾神器
奥巴马长女音乐节踢人 被踢者很高兴
用数据说话 互联网如何影响青少年
小女孩得知弟弟终将长大后,伤心地哭了
为什么父亲想要男孩而母亲喜欢女孩?
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |