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题型:阅读选择 题类:真题 难易度:困难

四川省自贡市2020年中考英语试题(含听力音频)

阅读理解

    When it comes to long-distance space travel, the biggest problem is that spaceships can only get as far as the fuel onboard allows. In 1964, a British writer Clarke came up with the idea of "solar sailing "in his science fiction. He wrote of large, mirror-like sails that collect power from the sun and free spaceships from the limitation of fuel.

    This sci-fi idea was first successfully brought to reality (现实)in 2010 by Japan's IKAROS satellite. Ever since then, the technology has improved mission by mission, with the latest being NASA's Advanced Composite Solar Sail 3 (ACS3).NASA has recently announced that it's going to team up with Lithuania's satellite-building company NanoAvionics to test its new sail in low-Earth orbit.

    To many, a solar sail (太阳帆) may look like a giant solar panel (太阳能电池板), but it actual works very differently. While solar panels take in energy from the sun and change it into power solar sails use photons(光子) given off by the sun to create direct power. Besides, solar panels are big and heavy to carry, while solar sails are just the opposite.

    According to Abbott, the CEO of NanoAvionics, the upcoming low-Earth orbit trial with NASA, if successful, will be followed with deep-space missions that involve larger solar sails. These are ideal for low-cost and long-distance space travel because fuel will no longer be a problem.

    "It started as a sci-fi dream, "Popular Mechanics reporter Jennifer Leman wrote. "Now it could be the future of space flight."

(1)、What can we say about solar sailing according to the first two paragraphs?
A、It was widely used in space travel. B、It was tried by IKAROS satellite. C、It was from the creative idea by Clarke.
(2)、Which of the following words best describe solar sails compared with solar panels?
A、Big and heavy. B、Small and light. C、Powerful and large.
(3)、What does the underlined word These in paragraph 4 refer to?
A、Larger solar sails. B、Deep-space missions. C、Long-distance space flights.
(4)、What is the best title for the text?
A、Solar Sail: the Latest Technology B、Solar Sail: from Dream to Reality C、Solar Sail: a New Kind of Spaceship
举一反三
阅读短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。

    Brooke wanted a dollhouse and some sugar cookies. So the 6-year-old asked Alexa to get them. Alexa wasn't her mom or babysitter. It was a voice-activated home assistant powered by AI (人工智能). And it made Brooke's wishes come true. A few days later, much to her parents' surprise, a $170 dollhouse and four pounds of cookies showed up. They ate the cookies and gave away the dollhouse to a local hospital. And that's not the end of the story. When a news reporter told the story of what happened on TV, Alexa devices (设备) in many listeners' homes woke up and tried to order dollhouses!

    Alexa isn't the only AI willing to serve you. Apple Home Pod has Siri, Google Home has its Assistant, and the upcoming Galaxy Home device will have Bixby. People who have these devices use them mainly for listening to music, checking the weather, and setting timers. According to a report from The Information, nowadays voice shopping is rare. But many scientists predict a boom (增长) in voice shopping in the near future. Is that a good thing?

      ▲   You can shout out an order as soon as you think of it, even if you are cooking, cleaning, or driving. In addition, people with disabilities who are unable to use a keyboard or mouse can shop without any help.

    But voice shopping has its disadvantages. Unwanted dollhouses aren't the biggest problem. It's usually very easy to cancel an order or return products. The thing that worries some people is that these assistants are always listening. They have to be able to respond when you want them. So they listen for "Alexa" or "OK Google" or another order. When they hear it, they start recording the conversation. Some have worried about what happens shopping habits? And what if someone hacks (入侵) the device? The CIA found a way to hack smart TVs to turn them into spies that listen all the time. Others could do the same with any smart device.

    What do you think? Are you ready to start voice shopping?

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