Tiêu đề VSTEP-Reading test 9.docx ✅

Code 9 - Page 3 of 14 4. The word “them” in paragraph 4 refers to_______. A. fuel cells B. metals C. treatments D. products 5. Where in the passage does the author explain why hydrogen is used as a refrigerant? A. Paragraph 1 B. Paragraph 2 C. Paragraph 3 D. Paragraph 4 6. The word “readily” in paragraph 4 could best be replaced by_______. A. completely B. slowly C.easily D. usually 7. What does the author mean by the statement underlined in paragraph 4? A. Oxygen is removed by combining it with hydrogen and heating it. B. Water can be made by combining hydrogen and oxygen. C. Hydrogen cannot be separated from oxygen because it is too difficult. D. It is easy to form steam by heating water. 8. The word “combining” in paragraph 6 is closest in meaning to_______. A. trying B. changing C. finding D. adding 9. The author mentions all of the following as uses for hydrogen EXCEPT_______. A.to remove tarnish from metals. B. to produce fuels such as gasoline and methyl alcohol. C. to operate fuel cells that generate electricity. D. to change solid foods to liquids.