Apparently.we are safe neither at home nor in the business office．We use water i

Apparently，we are safe neither at home nor in thebusiness office．We use water in both places，but the research shows that chemicals added to our local watersupply to kill harmful bacteria can have unwanted side effects．These chemicals can cause potential harm through drinking and in seeminglyharmless activities as cleaning one’s house．They arereleased(set free)from water by daily actions like water running out of tap，spraying from garden pipes，or splashing indishwashers and washing machines．As the water is moving．these chemicals are released into the air and then breathed in. Onceinside our bodies, they start to affect our health.

    Doesthis mean we should stop bathing? No, say the scientists, but we should putall pollution into perspective. Activities at home such as the burning ofcoal, cooking oil, or even candles release carbon monoxide and particulatessuch as cigarette ashes which have been proven as harmful to health as workingor living near heavy traffic. New tugs, bedding, and even clothing give offthat“newsmell, ”which is a sure sign of chemicals. In theoffice, newly applied paint, newly purchased telephones and othertelecommunications equipment, and computers release polluting chemicals, too.As offices and homes often have inadequate ventilation (通风), these chemicals can build up to become health problems. Theirpoisonous effects are only now being slowly recognized.

    Thesefacts suggest that, at a minimum, proper airing of newly purchased goods withan obvious chemical smell is a wise warning. Home and office windows should beopened during good weather. Even one’s car needs to be ventilated as well whilein the garage.

    Weneed further research to understand better other potential health dangers, too.For example, the effects of overcrowding of schools (carbon dioxide build-up ),the factory work environment ( an endless list of potentially dangeroussubstances ), and even home heating and cooling (the air conditioner may be ourenemies, not our friends) have only recently started to come to light. Until weunderstand the effects of our new technological environment better, we can onlyhope that“thereis no place like home.”

1.Whatis the main idea of the first paragraph?

    A．The air we breathe in isharmful.

    B．The water in everyday useis unsafe.

    C．Chemicals are added to thedrinking water.

    D．Chemicals are released inthe running water.

2.InParagraph 2, the underlined sentence means that      .

    A．bathing should be donewith caution

    B．homes and offices shouldbe aired often

    C．any pollution should betaken into consideration

    D．we should prevent anypollution from doing harm to us

3.Whatis the purpose of the passage?

    A．To call on us to guard ourwater.

    B．To show us that no placeis like home.

    C．To make us aware of thepollution around us.

    D．To argue that neitherhomes nor offices are safe.

试题答案

【答案】

1.B2.C

3.C