14．
While no one is looking，Frenchman Alain Robert jumps up an office building and starts to climb the wall．There's no rope and no safety net-he's using only his hands!By the time he's halfway up，a crowd has gathered below．After an hour，he reaches the top and the crowd sighs with relief （如释重负）．
Alain has climbed over 85 of the tallest buildings in the world，including the Eiffel Tower，the Empire State Building and the Petronas Twin Towers in Malaysia．One of his first climbs was at the age of twelve．He didn't have his apartment keys and his parents were out，so he climbed up the outside of the building-seven storeys high-and got in through a window．But，amazingly，Alain has a problem with height-he feels dizzy （眩晕的） when he's up high!He has fallen seven times，which has left him partly disabled．But this doesn't stop Alain．"I only think about what I can do，not what I can't do，"he says．
Why does he do it？Alain wants people to see their living environment differently．He says，"Maybe they think their building is ugly，this big tower with lots of glass-the opposite of a natural scenery．But for me，it's another mountain．So I use the place where they work，and make it a kind of wonderland．Everywhere I climb，I see people who are happy．"
What he does is sometimes illegal （非法的），but most of the time he just gets a fine （罚款）．The only thing that can stop his climbing is rain!In 2002，he got stuck on the 35th floor of London's Canary Wharf Tower when it started to rain．Alain's nickname may be Spider-Man，but he is no superhero．He's just an extraordinary man living a dangerous life!
51．When Alain Robert climbs a building，D．
A．many people watch him begin B．he never rests on his way to the top
C．he enjoys looking down at the crowd D．he doesn't use any safety equipment
52．When he was young，Alain climbed up into his apartment becauseC．
A．his parents lost their keys
B．he wanted to see if he could make it
C．it was the only way he could get in
D．his parents encouraged him to do so
53．Alain climbs skyscrapers because he wants toD．
A．shock people B．challenge himself only
C．make city life more exciting D．change people's way of thinking
54．Alain didn't reach the top of the Canary Wharf Tower becauseC．
A．the police stopped him B．he fell off the tower
C．the weather stopped him D．he felt too dizzy half-way up
55．The purpose of this passage is toB．
A．criticize Alain for what he does B．give information about Alain
C．stop people from trying dangerous activities D．encourage people to support Alain．
