Tiêu đề HS UNIT 6 TEST 1.docx ✅

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the Questions from 34 to 40. An engine is a machine that creates mechanical motion from energy. In order to do this, an engine frequently requires some type of fuel to burn. Nowadays, many engines are used to power cars and other forms of transportation. These vehicles most commonly have an internal combustion engine and rely upon gasoline for power. However, there are several types of engines that can use alternative energy sources. Many people are trying to switch to them because gasoline, which is a fossil fuel, creates pollution and is also a non-renewable resource Alternative energy sources, meanwhile, create less pollution and are often renewable sources of energy. These days, engines that are able to burn biofuels are somewhat common. Biofuels are fuels that are made from biological material, such as corn, soybeans, and sugarcane. These biofuels burn cleanly, so they produce much less pollution than fossil fuels. In some countries, such as Brazil, cars with biofuel engines are standard. In fact, most of the cars in Brazil have engines that can operate on either gasoline or biofuel. A second type of alternative engine is the electric engine. Cars with electric engines have been common for decades. Most are being used in hybrid cars at the moment. These are vehicles that have both a gasoline- powered engine and an electric one. In many cases, the gasoline-powered engine is used to operate the car at high speeds on expressways. The electric engine is utilised for city driving. One benefit of hybrid cars is that as the gasoline-powered engine runs, it simultaneously recharges the electric engine. A third type of alternative engine is the hydrogen engine. It utilises hydrogen fuel cells, which convert hydrogen into electricity that can power the car These days, there are many cars and buses that rely upon hydrogen engines. However, there are some problems associated with this type of engine. The hydrogen used in the engine must be processed from other materials, and it is also difficult to store. As a result, vehicles that run on hydrogen are expensive. Question 34. What would be the best title for the passage? A. Biofuels: Can They Really Run Car Engines? B. Cars to Use Internal Combustion Engines C. New Types of Alternative Energy Engines D. What Is the Best Type of Vehicle Engine? Question 35. According to paragraph 1, what is probably true about alternative energy sources? A. They have only been discovered recently. B. They are less common than fossil fuels. C. They cost a great deal to produce. D. They are rejected by the majority of people. Question 36. The author uses corn, soybeans, and sugarcane as examples of _______. A. crops that are grown in Brazil B. plants that can be eaten by people C. biological materials that grow quickly D. things that can be turned into biofuels Question 37. What does the author say about biofuels in Brazil? A. Many cars there can run on them. B. They were first discovered there. C. They are used more than gasoline. D. Many Brazilians approve of them. Question 38. When do many hybrid cars use their electric engines? A. When being driven in the countryside B. When being driven on city streets C. When being driven on highways D. When being driven on expressways Question 39. The word “recharges” is closest in meaning to _______. A. resumes B. repels C. repels D. refreshes Question 40. According to the passage, all of the following statements are true about hydrogen engines EXCEPT _______.