题目内容：

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 tuk­tuks scoring 14 percent.

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