High-Q | חטיף 3

7

חטיף מס '3

אנגלית

19. One of the chemicals used to treat asbestos discussed in the second paragraph is -

(1) silica (2) hydrogen (3) magnesium (4) fluoride ion

20. The term “these” in line 19 refers to -

(1) treatments (2) fibers (3) chemicals (4) buildings

21. The word “consistency” (line 23) could be replaced by -

(1) taste (2) recipe (3) texture (4) chemical treatment

22. The main subject addressed by the passage above is -

(1) a new and safer form of asbestos (2) the dangers of asbestos when used for fireproofing or insulation (3) the chemical composition of asbestos (4) changes in the molecular composition of asbestos throughout the past decades

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