Unit 5 Canada-The True North learning about language课时作业

第一节 完形填空（共20小题；每小题1分，满分20分）

　　阅读下面短文，从短文各题所给的四个选项（A、 B、 C和D）中，选出可以填入空白处的最佳选项。

　　Modern inventions have speeded up people's lives amazingly. Motor cars 1 a hundred miles in more than an hour, aircraft cross the world within a day, 2 computers operate at lightning speed. Indeed, this love of 3 seems never-ending. Every year motor cars are produced which go even faster and each new computer boasts(吹嘘) of __ 4__ precious seconds in handling tasks.

　　All this saves time, but 5 a cost. When we lose or 6 half a day in speeding across the world in an airplane, our bodies tell us so. We get the uncomfortable feeling known as jet-lag(时差). Our bodies feel that they have been 7 behind in another time zone. Again, spending too long at 8 results in painful wrists and fingers. Mobile phones also have their dangers, according to some scientists; too much use may transmit(传播) harmful 9 into our brains, a consequence we do not like to 10 about.

　　However, how do we 11 the time we have saved? Certainly not relax, or so it seems. We are so accustomed to constant activity that we find it 12 to sit down and do nothing or even just one thing at a 13 . Perhaps the days are long gone when we might listen 14 to a story on the radio, letting imagination take us into 15 world.

　　There was a time 16 some people's lives were devoted simply to the cultivation (耕作) of the 17 or the care of cattle. No multi-tasking (多重任务) there; their lives went on at a much gentler pace, and in a familiar pattern. There is much that we might envy about a 18 of life like this. Yet before we do so, we must think of the hard tasks our ancestor 19 . Modern machinery has 20 people from that primitive existence.

1 A get B cover C make D fly 2 A while B thus C when D as 3 A time B product C speed D transportation 4 A wasting B saving C losing D spending 5 A in B on C with D at 6 A gain B earn C drop D miss 7 A come B forgotten C left D felt 8 A airplanes B computers C sea D cars 9 A radiation辐射 B prevention C combination D destruction 10 A wish B think C tell D carry 11 A control B handle C do D deal 12 A good B difficult C uncomfortable D easy 13 A second B day C year D time 14 A quietly B meaningfully C enthusiastically D actively 15 A all B another C else D other