Contoh soal tes toefl dan pembahasannya pdf

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The United Says has taken similar activity with different other chemical compounds. Because of this harmful feature, the United Expresses revoked authorization for the house use of carbon tetrachloride in 1970. In the prior, carbon tetrachloride was a common component in washing compounds that had been used throughout the house, but it has been discovered to be harmful: when warmed, it shifts into a toxic fuel that can trigger severe sickness and also death if it can be inhaled.

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Despite its wide-spread use in business, co2 tetrachloride offers been prohibited for home use.