tailieunhanh - Toefl preparation for the computer and paper test part 37

Tham khảo tài liệu 'toefl preparation for the computer and paper test part 37', ngoại ngữ, toefl - ielts - toeic phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 3 a 3 a 3 a 3 a 3 a 3 a 3 a 3 Questions 1-9 Carbon tetrachloride is a colorless and inflammable liquid that can be produced by combining carbon disulfide and chlorine. This compound is widely used in industry today because of its effectiveness as a solvent as well as its use in the production of propellants. Line Despite its widespread use in industry carbon tetrachloride has been banned for home use. In 5 the past carbon tetrachloride was a common ingredient in cleaning compounds that were used throughout the home but it was found to be dangerous when heated it changes into a poisonous gas that can cause severe illness and even death if it is inhaled. Because of this dangerous characteristic the United States revoked permission for the home use of carbon tetrachloride in 1970. The United States has taken similar action with various other chemical compounds. 1. The main point of this passage is that A carbon tetrachloride can be very dangerous when it is heated B the government banned carbon tetrachloride in 1970 C although carbon tetrachloride can legally be used in industry it is not allowed in home products D carbon tetrachloride used to be a regular part of cleaning compounds 2. The word widely in line 2 could most easily be replaced by A grandly B extensively C largely D hugely 3. The word banned in line 4 is closest in meaning to A forbidden B allowed C suggested D instituted 4. According to the passage before 1970 carbon tetrachloride was A used by itself as a cleanser B banned in industrial use C often used as a component of cleaning products D not allowed in home cleaning products 5. It is stated in the passage that when carbon tetrachloride is heated it becomes A harmful B colorless C a cleaning compound D inflammable 6. The word inhaled in line 7 is closest in meaning to A warmed B breathed in C carelessly used D blown 7. The word revoked in line 8 could most easily be replaced by A gave B granted C instituted D took away 8. It can be inferred from the .