Many of us are interested in time travel and shuttling back and forth (来回地) to the past or the future. Who wouldn’t be enthralled by returning to the past or seeing the future? But time travel seems to be possible only in our imagination or in science fiction (科幻小说).

Science fiction is a world where impossible things can become possible and that’s why most of us like it. But science fiction is not entirely fiction since it is based on science theories (理论). Time travel, for instance, is a theme used by sci-fi writers. Readers may sometimes think writers have first-hand experience of it. I have collected some of the popular ways in which time travel is made possible in science fiction:

● Through the wormhole — A wormhole is a path between points in space-time. According to Einstein, an object can pass through a wormhole if it can travel at the speed of light. An example of a wormhole is described in Riddle of the Red Bible.

● Through a black hole — A black hole is a vacuum (真空) in space where light cannot even escape or pass through. In some sci-fi movies, like Star Trek, black holes became the means to travel through time.

● Through time machines — In science fiction, time machines are vehicles that can travel faster than light. It can be a strange vehicle like the TARDIS in Doctor Who or a special car like the one used in Back to the Future. But these special vehicles would need a wormhole to travel to the past or the future.

● Through parallel universe (平行宇宙) — Another popular way to travel through time is to be able to get into a parallel universe where one can go back to a point in time and see a different reality.

Though we know time travel may not be possible, it is still an entertaining subject and a heated topic for most of us. And in science fiction, where reality is always in the imagination, time does not really matter.

1.The underlined word “enthralled” in Paragraph 1 probably means “_____”.

A. defeated B. confused

C. shocked D. attracted

2.What can we learn from the passage?

A. Time travel might become possible in the far future.

B. Time machines can’t travel to the past or the future without a wormhole.

C. Sci-fi writers have similar experiences to those they describe in their fiction.

D. An object can travel to the past or the future when its speed is faster than light.

3.What is the author’s purpose in writing this passage?

A. To arouse the heated topic of time travel among readers.

B. To introduce how humans travel through time in science fiction.

C. To introduce the author’s knowledge of time travel to the readers.

D. To compare different ways of time travel mentioned in some science fictions.

London taxis, with their friendly drivers who actually know where they are going, are ranked best in the world, according to an annual taxi survey.

The survey by travel website hotels.com found London taxis, despite being the most expensive, beat rivals (对手) across the globe to head the list for the third consecutive (连续的) years, scoring a total of 59 percent in votes on several categories by travelers.

London taxi drivers were voted both friendliest and most knowledgeable. Drivers in the English capital must pass a rigorous examination called The Knowledge to earn their taxi license.

New York's yellow taxis came second in the list, scoring 27 percent which was up 10 percentage points from last year even though Manhattan's cab drivers tied (打成平局) with Parisian taxi drivers as the rudest.

Travelers said New York had the most convenient taxis.

Taxi drivers in Rome were voted the worst drivers in the world with almost one in ten travelers thinking the Italian capital had the world's worst taxi drivers when it came to the quality of driving.

“Traveling by taxi is one of the first experiences that many travellers have upon arrival in a new city. In fact, the research found that cabs are by far the most popular method of traveling from the airport to their hotel,” a spokesman for hotels.com said in a statement.

The global survey scored city based taxis for their levels of cleanliness, value, quality of driving, knowledge of the area, friendliness, safety and convenience.

Rounding out the top five were Tokyo with a total score of 26 percent, Berlin with 17 percent, and Bangkok famed for its tuk?tuks scoring 14 percent.

The survey for hotels.com, part of the Expedia group, was conducted among over 1,900 travellers between May 11?28 this year.

1.Which of the following about London's taxi drivers is wrong?

A. They are the friendliest.

B. They are the most knowledgeable.

C. They charge the most money.

D. They drive fastest.

2.What does the underlined word “rigorous” mean in the third paragraph?

A. strict B. important

C. official D. lawful

3.Rome's taxi drivers are lack of ________.

A. good manners

B. driving skills

C. the sense of cleanliness

D. the sense of safety

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