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1、Passage OneDuring the past several years, many new uses of television sets have been introduced.在过去的几年，新的使用电视的方式出现了。Video cassette recorders, video games, cable TV, and home computers are becoming popular accessories(附件附件) for the home TV.视频磁带，游戏机，有线电视以及家庭电脑都成为电视的有机组成部分。 The videodisc(碟片碟片) is the m
2、ost recent and perhaps the most important of the new home entertainment media.碟片是最新的也是最重要的家庭娱乐媒体。A videodisc looks like an ordinary record, but it reproduces pictures and sound. 碟片很像一个普通的拷贝，但是它可以记录图像和声音。It is designed to play back programs that have been recorded on it. 它可以回放储存在上面的信息和程序。The manufact
3、urers record movies, concerts, and educational programs on the discs.在碟片上可以储存电影，音乐会，以及教育节目。A videodisc is made of plastic. 碟片是用塑料做成的。Its surface is covered with tiny pits that wind around the disc in a coil.碟片的表面是一些圆形的凹槽。 The size and arrangement of the pits form a code that represents the recorded
4、pictures and sounds.凹槽的数量和排列可以记录图片和声音。 As the disc spins on the disc player, the player reads the code and translates it into a TV signal which is then shown on the TV screen.当碟片被放入影碟机，影碟机把凹槽上面的信号翻译成电视屏幕上可以播放的节目。Manufacturers began developing videodiscs in the 1970s.20 世纪 70 年代碟片开始被生产出来。 Videodiscs
5、and players have been available for home use since December 1978, and their manufacturers hope that they will become as popular as records and record players. 家庭用的碟片产生于 1978 年 12 月，生产商希望碟片可以像唱片那样得到广泛的使用。Home entertainment, however, is not the only use for videodisc. 然而家庭娱乐并非碟片唯一的用武之地。Some companies
6、are developing videodisc systems to store computer information and record visual computer programs. 一些公司利用碟片存储信息和记录可视电脑程序。Home computers may even be used with video players in the future. 在将来，电脑也许会和影碟机共同使用。1. The passage is mainly about _.文章主旨 A) the videodisc and its functions 碟片和它的功能 B) the uses o
7、f television sets 电视机的使用 C) home computers 家庭电脑 D) video cassette recorders 可视唱片 2. According to the passage, a videodisc _.碟片是 A) can only reproduce sound 只能记录声音 B) can only reproduce pictures 只能记录图像 C) can reproduce pictures and sound 可以记录声音和图像 D) is only an ordinary record 只是一种普通的唱片 3. A videodis
8、c is made of _.碟片的制作材料 A) metal 金属 B) plastic 塑料C) glass 玻璃 D) wood 木头 4 .Manufacturers began developing videodiscs in _.碟片最早 生产时间 A) the 1960s B)the 1970s C) the 1980s D) the 1990s 5. Which of the following statements about videodisc is NOT true? 错误选项 A) They can replace home computers.碟片可以代替家庭电脑 B
9、) They are used for home entertainment.碟片用于家庭娱乐 C) They can reproduce sound.碟片可以录制声音 D) They may record visual computer programs in the future.在 将来他们可以记录可视的电脑程序 Passage Two The sea is the largest unknown part of our world.海洋是我们世 界未知的部分。It covers seventy-one percent of the earth. 它覆盖了百分之 七十一的地球表面。The
10、re is still much to be discovered about this vast blanket of water.关于海洋还有很多是我们所不知道的。 One of the most interesting projects in oceanography(海洋学) is the work of mapping the ocean floor.在海洋学中最有趣的工程 之一是绘制海底地图。 Only a very small part of it has been mapped. 目前我们只绘制了很小一部分海底的地图。This was not important when on
11、ly surface ships sailed the worlds oceans, but it can mean the difference between life and death to men in submarines(潜艇).当普通船只航行时海底地图不怎么重要，但是 对于潜艇中的人们来说，海底地图就意味着生死。 Long ago there was only one way to find out how deep the ocean was. 很久以前只有一种找到海洋深度的方法。A seaman could throw a weighted rope over the si
12、de of his ship.一名水手从船 上把一根很重的绳子投入海里。 Then he pulled the rope up after it had reached the bottom. 然后当绳子达到海洋底部时再把它拉上来。But this was not a very exact way of measuring.但是，这不是 一个精确的测量的方法。 In the twentieth century a better way was found.二十世纪时人 们找到了更好的方法。 Sound was used to measure the ocean.人们 利用声波测量海洋。 An
13、American Navy ship sailed into a narrow strip of water to conduct an experiment. 一艘美国军舰驶入一个海 峡进行这个实验。Seamen dropped a number of devices that would burst with a loud noise when they hit the bottom. 水手把一些设备 投入海里，这些设备在达到海洋底部时会发出很响的声音。And a little instrument that had been invented measured the time it t
14、ook for the sound to reach the ship. 这时有一个装置测量声音从海底 达到船的时间。This has helped oceanographers map the ocean floor.这 种测量的方法能够很好的帮助海洋学绘制海底的地图。 Underwater photography is also important in mapping parts of the ocean floor.水下摄影术在绘制海底地图时也非常重要。 With the new methods that have been perfected, cameras can take pi
15、ctures of the underwater valleys, even in color.随着新技术的日趋成熟， 照相机可以拍下水下峡谷的照片，甚至是彩色照片。 1. The sea covers _.海洋覆盖了 A) less than a quarter of the earth 不到地球表面的四分之一 B) about half of the earth 地球表面的二分之一 C) almost three quarters of the earth 大约地球表面的四分之 三 D) more than three quarters of the earth 超过地球表面的四分 之三
16、2. The work of mapping the ocean floor is very important to 绘制海 底地图对于以下哪项很重要_. A)surface ships 普通船只 B) people in submarines 潜水艇 C) ancient people 古代的人们 D) an American Navy ship 一艘美国军舰 3. According to the passage, a seaman _.一个水手 A)used to find out the oceans depth with the help of a weighted rope 过去常常用一条很重的绳子测量海底的深度B) could find out the exact depth of the ocean a long time ago 很久以
