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For many people the most exciting development in recent years is Picturephone service. Picturephone service, 1 became available commercially in the 1970¬ðs, was 2 used by large business corporations. But as Picturephone service becomes available, it will no doubt 3 from th
e office to the home. It is already clear that "the next 4 thing to being there" is going to be a Picturephone call.
Possibly the most significant research now 5 is in the us e of the laser beam in telephone communications. This "new 6 , first produced by scientists in 1960, can beam continuously and 7 extraordinary intensity. 8 using light to 9 , they are thinking of ways to use lights to communicate by. 10 , they are thinking of using light for the same purpose 11 radio waves are now used to 12 telephone calls, television programs; and data messages from one point to another. With the 13 of Picturephone service and high speed data communications 14 computers, present messageª²carrying 15 may soon become inadequate. If it turns out to be technically and economically sound, the laser might prove to be a major 16 in telephone communications.
Current research in telephone communications is so extensive and changes are coming about 17 no one can predict with accuracy 18 the telephone of tomorrow will be like. But there is at least on e prediction that can be made 19 : there would be more and more telephones in the future, and they will be 20 .
1.¡²A¡³what¡²B¡³that¡²C¡³which¡²D¡³where
2.¡²A¡³at first¡²B¡³first¡²C¡³the first¡²D¡³in the first
3.¡²A¡³expand¡²B¡³spread¡²C¡³scatter¡²D¡³shift
4.¡²A¡³good¡²B¡³comfortable¡²C¡³convenient¡²D¡³best
5.¡²A¡³conducting¡²B¡³being conducted¡²C¡³having been conducted¡²D¡³conducted
6.¡²A¡³laser¡²B¡³rays¡²C¡³light¡²D¡³invention
7.¡²A¡³have¡²B¡³offers¡²C¡³at¡²D¡³with
8.¡²A¡³By means of¡²B¡³Instead of¡²C¡³On account of¡²D¡³For
9.¡²A¡³see¡²B¡³see by¡²C¡³look¡²D¡³look at
10.¡²A¡³Moreover¡²B¡³On the contrary¡²C¡³In other words¡²D¡³Therefore
11.¡²A¡³as¡²B¡³which¡²C¡³what¡²D¡³/
12.¡²A¡³transmit¡²B¡³transport¡²C¡³pass¡²D¡³move
13.¡²A¡³change¡²B¡³stretch¡²C¡³expansion¡²D¡³extension
14.¡²A¡³between¡²B¡³among¡²C¡³with¡²D¡³by
15.¡²A¡³ability¡²B¡³capacity¡²C¡³capability¡²D¡³possibility
16.¡²A¡³breakdown¡²B¡³breakout¡²C¡³breakthrough¡²D¡³breakup
17.¡²A¡³rapidly that¡²B¡³very rapidly so¡²C¡³so rapidly that¡²D¡³rapidly so
18.¡²A¡³what¡²B¡³of¡²C¡³in¡²D¡³that
19.¡²A¡³certainly¡²B¡³surely¡²C¡³clearly¡²D¡³with assurance
20.¡²A¡³better ones¡²B¡³better telephones¡²C¡³best ones¡²D¡³the best ones
Key to Model Test 10
1.¡²C¡³2.¡²A¡³3.¡²B¡³3.¡²D¡³5.¡²B¡³6.¡²C¡³7.¡²D¡³8.¡²B¡³9.¡²B¡³10.¡²C¡³
11.¡²D¡³12.¡²A¡³13.¡²C¡³14.¡²A¡³15.¡²B¡³16.¡²C¡³17.¡²C¡³18.¡²A¡³19.¡²D¡³20.¡²A¡³

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