Bài tập trắc nghiệm Unit 8 - Đề kiểm tra có đáp án
1016 lượt thi 50 câu hỏi 120 phút
Text 1:
Read the passage below and choose one correct answer for each question.
In the future, maybe all cars that run on petrol will be replaced by solar cars, which have been around for a while, but with recent developments in solar car design and the measurement of photovoltaic cells becoming smaller, the dream of a truly efficient solar car is more reality than fantasy. A solar car is a vehicle powered by photovoltaic cells, also called solar cells, which convert sunlight (light energy) into electrical energy. As a source of energy on earth, there is nothing like the sun: in a mere one thousandth of one second (.001) , the sun emits enough energy to fulfill our planet's energy needs for the next 5,000 years. It is a staggering fact, and an exciting one. Since the energy from the sun is responsible for renewable resources such as wind, tides, and heat, solar energy seems to offer the brightest future for not only cars, but for the entire energy crisis. Despite the appearance that solar energy may be the least, feasible among the current crop of alternative fuel propositions, new solar powered devices and more specifically solar powered cars are beginning to be developed. How do Solar Cars work? The photovoltaic cells absorb photons from sunlight. This action generates heat, which the cells then convert into electrical energy and stores in an onboard battery. This process of conversion is called the photovoltaic effect. Not surprisingly, such a vehicle has zero emissions, and is very environmentally friendly. Unfortunately, at the moment photovoltaic cells are extremely inefficient, yet as time progresses the efficiency of these cells will grow. This will make solar energy and solar cars the fuel and car of the future - a closer reality.
Text 2:
Read the following passage and choose the best answer for each blank.
Robots are already a part of our lives. Industrial robots widely used in manufacturing. Military and police organizations use robots to (26)_____ in dangerous situations. Robots can (27)_____ be found from vacuuming the floors in your home to exploring the surface of Mars. Within a few more years a whole host of robotic adaptations will be running many aspects' of our lives. "I think in (28)_____ next thirty years, we are going to see a transformation between the industrial sorts of robots to personal robots," says Brooks from Brooks' company, IRobot, markets floor cleaning robots for homes. "The advances in robotics make it clear that many household (29)____ will be easily handled by a robot in the near future," says Bob Christopher, who works for a robotic technology company that is marketing a toy robot (30)_____ Pleo. "We have only one child but I could easily (31)_____ five or six robots in the home as well." Within the next 10 years one will be able to (32)_____, to lease or purchase a domestic robot that not only does the household cleaning and prepare and serve his meals, (33)_____ also can carry him to the bathtub if he cannot walk. Demographic changes, such as a rapidly aging population and a shrinking workforce, will drive forward the application of new (34)___. There is going to be a real pull for increasing the productivity of working age people. So there is going to be a real push for robotics to help people. (35)_____ addition, it is likely that in the near future we will see robots- taking on some of the care functions elderly, or long-term ill people. Military and police organizations use robots to (26) _____ in dangeroussituations.
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