Tibet is in the southwest of China. It is the home to many natural wonders, such as valleys, mountains, lakes and even deserts. Tibet is very large, so it is perfect for traveling, especially the bike tour(旅游).
You can start the wonderful bike tour in Tibet’s capital, Lhasa. It is 3600 metres above the sea level. It’s very high, isn’t it? So it is important to spend a few days there to get used to（习惯） the thin air there, or you may feel sick and get hurt. The bike tour will pass rivers, large open grassland and high mountains, including the world's famous Mount Everest(珠穆朗玛峰).
After finishing the bike tour, people will feel quite successful. They will also have hundreds of photos of the wonderful places.
小题1:Tibet is the home to _____________ .
A．valleys
B．mountains
C．deserts
D．many natural wonders小题2:Tibet is a perfect place for the bike tour ___________.
A．because of the old people there
B．because bike is cheap
C．because it is very rich
D．because it is large小题3:Why do people have to stay in Lhasa for a few days?
A．To meet friends there.
B．To get used to the thin air there.
C．To go home in the first week.
D．To wait until it rains.小题4:People usually feel __________ after the bike tour.
A．unhappy
B．sad
C．blue
D．successful小题5:People often have _______ when they finish the difficult journey.
A．a bad cold
B．a broken bike
C．hundreds of photos
D．a lot of new friends
，P(0＜X＜0.5)的值为（）。
。