题目内容：

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

All this saves time, but ____ a cost. When we lose or ____ 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 ____ behind in another time zone. Again, spending too long at ____ results in painful wrists and fingers. Mobile phones also have their dangers, according to some scientists; too much use may transmit (传播) harmful ____ into our brains, a consequence we do not like to ____ about.

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

There was a time ____ some people’s lives were devoted simply to the cultivation ( 耕作) of the ____ 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 ____ of life like this. Yet before we do so, we must think of the hard tasks our ancestors ____. Modern machines have ____ people from that primitive existence.

1.A. explore    B. get    C. cover    D. fly

2.A. when    B. as    C. thus    D. while

3.A. speed    B. time    C. product    D. distance

4.A. wasting    B. losing    C. saving    D. spending

5.A. in    B. at    C. on    D. with

6.A. earn    B. drop    C. miss    D. gain

7.A. left    B. come    C. forgotten    D. felt

8.A. ships    B. airplanes    C. computers    D. cars

9.A. prevention    B. radiation    C. combination    D. damage

10.A. think    B. tell    C. carry    D. wish

11.A. control    B. handle    C. do    D. deal

12.A. uncomfortable    B. easy    C. difficult    D. good

13.A. second    B. day    C. year    D. time

14.A. actively    B. quietly    C. enthusiastically    D. curiously

15.A. another    B. else    C. other    D. all

16.A. what    B. which    C. where    D. when

17.A. surface    B. water    C. land    D. island

18.A. way    B. view    C. pathway    D. point

19.A. expressed    B. charged    C. inspired    D. faced

20.A. freed    B. remained    C. kept    D. cleared