Tham khảo tài liệu 'infomation reading 2', ngoại ngữ, anh ngữ phổ thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | LONGER PASSAGES 371. The first person to use a gear system on bicycles was a. . Lawson. b. Kirkpatrick Macmillan. c. Pierre Michaux. d. James Starley. 372. This passage was most likely written in order to a. persuade readers to use bicycles for transportation. b. describe the problems that bicycle manufacturers encounter. c. compare bicycles used for fun with bicycles used for transportation. d. tell readers a little about the history of the bicycle. 373. Macmillan added iron rims to the tires of his bicycle to a. add weight to the bicycle. b. make the tires last longer. c. make the ride less bumpy. d. make the ride less tiring. 374. Read the following sentence from the fourth paragraph Ten years later James Starley an English inventor made several innovations that revolutionized bicycle design. As it is used in the sentence the underlined word revolutionized most nearly means a. cancelled. b. changed drastically. c. became outdated. d. exercised control over. 375. Which of the following statements from the passage represents the writer s opinion a. The safety bicycle would look familiar to today s cyclists. b. Two hundred years ago bicycles didn t even exist. c. The Michaux brothers called their bicycle a velocipede. d. Macmillan s machine had tires with iron rims. 95 LONGER PASSAGES One of the most hazardous conditions a firefighter will ever encounter is a backdraft also known as a smoke explosion . A backdraft can occur in the hot-smoldering phase of a fire when burning is incomplete and there is not enough oxygen to sustain the fire. Unburned carbon particles and other flammable products combined with the intense heat may cause instantaneous combustion if more oxygen reaches the fire. Firefighters should be aware of the conditions that indicate the possibility for a backdraft to occur. When there is a lack of oxygen during a fire the smoke becomes filled with carbon dioxide or carbon monoxide and turns dense gray or black. Other warning signs of a potential
