| 完形填空。 | ||||
| Is the world really going mad? 1 day I was sitting in a restaurant 2 a quick and a talk with a few friends when it suddenly 3 me that almost everyone in the restaurant was smoking. It wasn't long 4 the whole room was 5 with smoke. I asked with an apology for 6 to open a window to stop myself 7 ! Nowadays air pollution is something that is hardly questioned any more. However, I stil  l can't walk down the street in any of the big cities without 8 that people are 9 the air pollution. It is time for the government departments of the world to introduce emission(废气排放) controls on all cars and 10 the public transport system(公共交通体系) to encourage people to 1 their cars at home. A friend of mine takes flying lesson each morning and it really makes him 12 when he climbs above the smog layer(烟 雾) and looks down 13 it and thinks: "I'm breathing that!" this kind of 14 results from the bad management of resources. Waste things can 15 should be treated properly. House building, road 16 , and industrial development are all earthmoving( or earth-reducing) operations and can change the balances of 17 created over millions of years. I would like to 18 serious studies done on all these main works before they are built. Also, there should be 19 national parks set up to keep the most beautiful parts of our countries in their natural 20 . | ||||
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