tailieunhanh - Preparetaiton course for the toefl ibt reading part 3

Tham khảo tài liệu 'preparetaiton course for the toefl ibt reading part 3', ngoại ngữ, toefl - ielts - toeic phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | PASSAGE THREE Questions 10-13 New World Epidemics A huge loss of life resulted from the introduction of Old World diseases into the Americas in the early sixteenth century. The inhabitants of the Americas were separated from Asia Africa and Europe by rising oceans following the Ice Ages and as a result they were isolated by means of this watery barrier from numerous virulent epidemic diseases that had developed across the ocean such as measles smallpox pneumonia and malaria. Pre-Columbian Americans had a relatively disease-free environment but also lacked the antibodies needed to protect them from bacteria and viruses brought to America by European explorers and colonists. A devastating outbreak of disease that strikes for the first time against a completely unprotected population is known as a virgin soil epidemic. Virgin soil epidemics contributed to an unbelievable decline in the population of native inhabitants of the Americas one that has been estimated at as much as an 80 percent decrease of the native population in the centuries following the arrival of Europeans in the Americas. 10. The word they in the passage refers to the inhabitants epidemic diseases rising oceans the Ice Ages 11. The word that in the passage refers to a disease-free environment this watery barrier virulent epidemic diseases the ocean 12. The word them in the passage refers to pre-Columbian Americans the antibodies bacteria and viruses European explorers and colonists 13. The word one in the passage refers to a virgin soil epidemic an unbelievable decline the population of native inhabitants the arrival of Europeans READING SKILLS 21 PASSAGE FOUR Questions 14-18 Paragraph Horatio Alger Jr. 1 Horatio Alger Jr. 1832-1899 was the author of more than 100 books for boys in the second half of the nineteenth century that focused on the theme of success coming to those who work hard to achieve it. The son of a minister Alger came from a prominent Massachusetts family. He graduated with honors