What do you do if you're stranded（处于困境的）on a lonely island? Surely you need to find a way to get in touch with the outside world. Your best chance of doing this is to draw the attention of a passing plane.
　　Body signals（信号）
　　Pilots from different countries understand body signals if they have the correct training. When you wave your arms up and down in a straight line, it means "yes". When you point downwards and swing your arm from side to side, it means "no". If you want the pilot to know that it's safe to land, push your hands out in front of you and bend（弯曲）your knees. If you want to say that it's not safe to land, put your arms in the air and move them to one side.
　　Smoke signals
　　The smoke from a fire can be seen from far away, so it's a good way to draw attention. If the weather is dry, it isn't hard to start a fire. Remember, however, that fires can be very dangerous if they get out of control. Never light a fire unless you're sure that it can't spread. If the ground is dark, light smoke can be seen more easily. Green grass and leaves produce light smoke.
　　Ground-to-air signals
　　It's a good idea to build some signals, too. Use large pieces of wood to make the symbols(标记). If you can't find any wood, use earth. Some useful symbols are:
　　F "I need food and water."
　　II "I need medicine."
　　I "I am badly hurt."
　　X" I am unable to move from here."
　　Pilots' replies
　　If the pilot lowers the plane's wings from side to side, this means "message received and understood". (At night, the pilot flashes the plane's green lights.) If the pilots flies the plane in a clockwise circle, this means "message received but not understood".(At night, the pilot flashes the plane's red lights.)
However, there is no signal which means "message not received". Why not?
【小题1】 Which picture means "it's not safe land"?

　
【小题2】 What can we learn from the passage?

　　The story of the British Museum goes back three hundred years to one unusual man, Sir Hans Sloane, doctor to King George II. The doctor collected books, drawings, clothes, money, animals, flowers, things from all over the world. The doctor wanted everything to stay together when he died, so that people could come and have a look. The British Museum began. King George II gave his library, and the museum started to grow.

　　The British Museum opened in 1759, six years after Sir Hans Sloane died. At first the museum was only open three days a week and only ten people could enter in an hour. There wasn’t much time to see things. Visitors had to run through the rooms.

　　By about 1800, things began to get better. Wonderful statues, three thousand years old, arrived from Egypt.

　　George IV sold all his books to the museum secretly. A hundred years ago not only old books but also new ones arrived at the museum, and more people came to read them. Since then many famous men have written and studied there. And the library is growing faster and faster. There are four kilometers of new shelves every year and there are about two million visitors every year.

　　1.Sir Hans Sloane was interested in ________.

　　A. collecting all kinds of books　　　 B. collecting all kinds of drawings

　　C collecting all kinds of money　　　 D. collecting all kinds of things

　　2.When you go inside the British Museum, you feel smaller than usual because ________.

　　A. the museum is empty　　　　　　B. the museum is very big

　　C. there are too many things in it　　 D. you are too small

　　3.Sir Hans Sloane died ________.

　　A. in 1753　　　 B. in 1759　　　C. in 1765　　　 D. in 1800

　　4.At first, the visitors had to run through the museum because ________.

　　A. there are only several things to see

　　B. the museum was the biggest one in the world

　　C. they were not interested in the things in it

　　D. they had only one hour to see all the things in it

　　5.The passage is mainly about ________.

　　A. Sir Hans Sloane　　　　　　　　B. George II

　　C. the history of British Museum　　 D. the books of the museum