__29__

　　the whole room was

　　__30__

　　with smoke. I asked with an apology for permission(允许) to

　　__31__

　　a window to stop myself

　　__32__

　　!

　　Nowadays air pollution is something that hardly question any more. However, I still can’t walk down the street in any of the big cities without

　　__33__

　　that people are

　　__34__

　　from 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

　　__35__

　　the public transport system to encourage people to

　　__36__

　　their cars at home. A friend of mine takes flying lesson each morning and it really makes him

　　__37__

　　when he climbs above the smog layer(烟雾层) and looks down

　　__38__

　　it and thinks: “I’m breathing that!” This kind of

　　__39__

　　results from the bad management of resources. Waste things can

　　__40__

　　should, be treated properly. Road construction, House

　　__41__

　　, and industrial development are all earthmoving(earth-reducing) operations and can change the balances of

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