Some experts have discussed these accidents and used each accident to illustrate a particular danger. Thus the Texas City explosion was caused by tons of ammonium nitrate，which is safe unless stored in great quantity. The Flixborough fireball was the fault of management， which took risks to keep production going during essential repairs. The Seveso accident shows what happens if the local authorities lack knowledge of the danger on their doorstep. When the poisonous gas drifted over the town， local leaders were incapable of taking effective action. The Pemex fire was made worse by an overloaded site in an overcrowded suburb. The fire set off a chain reaction os exploding storage tanks. Yet， by a miracle， the two largest tanks did not explode. Had these caught fire， then 3，000 strong rescue team and fire fighters would all have died.

　　1.Chemical accidents are usually important enough to be reported as news because ____.

　　A.they are very rare

　　B.they often cause loss of life

　　C.they always occur in big cities

　　D.they arouse the interest of all the readers

　　2.Which of the following statements is true?

　　A.Working at the office is safer than staying at home.

　　B.Traverlling to work on public transport is safer than working at the office.

　　C.Staying at home is safer than working in the chemical industry.

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