A、The first line of London’s subway system was built in 1816. B、In London, subway is more often called "underground" or "tube".

Today, "Traveler" invites you to visit London.
   There are few cities in the world which call to mind so many powerful visual images as London, such as Big Ben, the Beefeater in their distinctive uniforms, and of course London’s unique red buses. In fact. red has traditionally been the color of choice in London. even including the phone boxes. All these and many other images are familiar, not only to the millions of tourists who visit the city each year, but also to many more millions of people around the world who have never been here. Most tourists choose to travel around London by the subway—which Londoners call the "underground" or, more familiarly, the "tube". London’s subway system is the oldest in the world--the first line was constructed in 1860—and it is still one of the most extensive, with over 200 stations and 300 miles of track.
   Britain was the first country in the world to introduce parliamentary democracy, and the imposing 19th century Parliament buildings are one of London’s main tourist attraction. Britain remains a monarchy to this day, of course, and the Queen’s London home, Buckingham Palace, is now open for tourists to visit. And they certainly do visit it: this may possibly be the most photographed building in the world!
   Everywhere you go in London there are reminders of Britain’s history and traditions, of the days when the British Empire ruled nearly half the world. But ail these powerful images of past glories and triumphs are not always seen so favorably by Londoners themselves. There’s often a feeling that visitors to Britain are more interested in her past than in her present or future. London is more than a vast museum of historical treasures, it’s also a very dynamic modem city, with as rich a cultural life as you’ll find anywhere in the world. London by night is buzzing with activity, with people out to go to a show, a movie, a meal out, or just to wander around. And it doesn’t rain in London as often as many people think! The West End of London is sometimes called "Theatreland"; most major British movie and TV stars have appeared on stage here at some point in their careers. Another world-famous British institution is the "pub", which is an abbreviation of the "public house". Once London’s pubs were for drinking only, and mainly frequented by men. Today they serve ail kinds of food, and many of them also offer live music, comedy, theatre or other forms of entertainment. And, of course, they welcome young and old, men and women alike. So here we are again in Piccadilly Circus, London’s most famous meeting point, as we prepare to leave this unforgettable city. And we’re aware, like all visitors to London, of how more we could have seen, if we had more time.
Questions:
23.Which of the following is true?
24.According to the passage, where do tourists take most photographs?
25.Which of the following is true according to the passage?
26.If you want to meet a friend, where are you most likely to go to?