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1、Unit 4 Astronomy the science of the stars 单元加餐练.阅读理解A(2017全国卷)Terrafugia Inc. said Monday that its new flying car has completed its first flight, bringing the company closer to its goal of selling the flying car within the next year. The vehiclenamed the Transitionhas two seats, four wheels and wing
2、s that fold up so it can be driven like a car. The Transition, which flew at 1,400 feet for eight minutes last month, can reach around 70 miles per hour on the road and 115 in the air. It flies using a 23gallon tank of gas and burns 5 gallons per hour in the air. On the ground, it gets 35 miles per
3、gallon.Around 100 people have already put down a $10,000 deposit to get a Transition when they go on sale, and those numbers will likely rise after Terrafugia introduces the Transition to the public later this week at the New York Auto Show. But dont expect it to show up in too many driveways. Its e
4、xpected to cost $279,000. And it wont help if youre stuck in traffic. The car needs a runway.Inventors have been trying to make flying cars since the 1930s, according to Robert Mann, an airline industry expert. But Mann thinks Terrafugia has come closer than anyone to making the flying car a reality
5、. The government has already permitted the company to use special materials to make it easier for the vehicle to fly. The Transition is now going through crash tests to make sure it meets federal safety standards.Mann said Terrafugia was helped by the Federal Aviation Administrations decision five y
6、ears ago to create a separate set of standards for light sport aircraft, which are lower than those for pilots of larger planes. Terrafugia says an owner would need to pass a test and complete 20 hours of flying time to be able to fly the Transition, a requirement pilots would find relatively easy t
7、o meet.篇章导读：本文是一篇新闻报道。文章主要介绍了国外一家公司研发飞行汽车的最新进展。1What is the first paragraph mainly about?AThe basic data of the Transition.BThe advantages of flying cars.CThe potential market for flying cars.DThe designers of the Transition.答案：A主旨大意题。根据第一段中提到飞行汽车的两个座位、四个轮子以及车翼、飞行速度、油耗等情况可知，该段是在介绍飞行汽车Transition的基本数据
8、。故选A。2Why is the Transition unlikely to show up in too many driveways?AIt causes traffic jams.BIt is difficult to operate.CIt is very expensive.DIt burns too much fuel.答案：C细节理解题。根据第二段中的“But dont expect it to show up in too many driveways. Its expected to cost $279,000.”可知，此款汽车不能推广的主要原因是它太贵了。故选C。3Wha
9、t is the governments attitude to the development of the flying car?ACautious.BFavorable.CAmbiguous.DDisapproving.答案：B观点态度题。根据第三段“The government has already permitted the company to use special materials to make it easier for the vehicle to fly.”中的permit可知，政府对此持支持的态度。故选B。4What is the best title for t
10、he text?AFlying Car at Auto ShowBThe Transitions First FlightCPilots Dream Coming TrueDFlying Car Closer to Reality答案：D标题判断题。本文是一则新闻报道，介绍了一种新型的飞行汽车。新闻报道的主题句通常是第一句话，本文的第一句中提到了“flying car”和“closer to its goal of selling the flying car within the next year”由此可知，飞行汽车快要变成现实了。故选D。B Plutowhich famously was
11、 degraded from a “major planet” in 2006captured our imagination because it was a mystery that could complete our picture of what it was like at the most remote corners of our solar system.Plutos underdog discovery story is part of what makes it so appealing. Clyde Tombaugh was a Kansas far boy who b
12、uilt telescopes out of spare auto parts, old farm equipment and selfground lenses. As an assistant at Lowell Observatory in Flagstaff, Arizona, Tombaughs task was to search among millions of stars for a moving point of light, a planet that the observatorys founder thought existed beyond the orbit of
13、 Neptune. After years efforts, Tombaugh finally found it. Pluto was the first planet discovered by an American, and represented a moment of light in the darkness of the Great Depression.For decades, Pluto thrived in its role as the ninth major planet of our solar system, even though it was tiny comp
14、ared to the others and so far away.However, 62 years after its discovery, two astronomers discovered another planetlike object beyond the orbit of Neptune. Six months later, they discovered a third object. It looked like Pluto might actually be a member of a sort of asteroid belt, similar to but way
15、 beyond one weve known about for a long time between the orbits of Mars and Jupiter.Another 14 years passed, dozens more objects beyond Neptune like Pluto had been discovered, so the International Astronomical Union elected to degrade the planet. It now shares its dwarf planet designation with three
16、 of the 1,200 bodies that have been located beyond Neptune today, collectively known as “Kuiper Belt Objects”The Kuiper Belt is populated by icy bodies that are remnants of the solar systems formation. These are the building blocks of planets. We now also know the surface of Pluto contains ices composed of methane, nitrogen, and other compounds familiar to us. It also
