Have you ever complained why life is so tiring? Does the sky sometimes seems d___1____to you? Well, friends, cheer up and smile all the time. If you see the world with your warm heart, you will find the whole world ____2___ to you.
On a sunny morning, you plan to have a walk to relax y__3____. Just before you go out, it s___4____starts to rain. Maybe you would feel very sad and start to complain about the weather. But dear friends, why not sit down and e___5_____ the free concert that the nature brings you? And with the timely rain, crops in the fields will grow better and farmers will have a good harvest.
A___6____everyone wants to succeed in what he tries to do; life isn’t a bed of roses. It’s very common to meet difficulties on the w____7____to success. In fact, difficulty isn't terrible. The real terrible thing is that we are afraid of it. Difficulty is l___8____a spring (弹簧). If you are w___9____, it will be strong. So when you meet difficulties, don't give up. Instead, you should face them with a smile.
Attitude(态度) d___10_____ everything. With an optimistic (乐观的) attitude, life is easy and pleasant.

阅读下面短文，根据上下文意义和所给单词首字母，写出空白处适当单词的完全正确形式。（每空一词）

      This summer, the most popular tourist sights in China should be Tibet．Why? Because the Oinghai-Tibet Railway was b 1   the year before last．The Qing-hai-Tibet Railway is the f  2    railway between Tibet and the r 3   of China．It is l,142 kilometers long and is the world’s h 4  railway．About 960 Kilometers of it is over 4,000 meters above sea level．Many people thought it i 5   to build a railway so high．But the railway successful c 6   in the end．

The railway makes the travel c 7   for Tibetans．Most of them can’t a 8   to travel by air．It also brings more tourists to Tibet．It is r 9   that the new railway brings 3,000 to 4,000 tourists to Lasa each day．In Shanghai, one travel agency has worked out a 10-day trip from Shanghai to Lasa for a p 10   of 3,600 yuan．However, this cost may change as the final price for the train has not been decided y 11  ．

A railway trip to Tibet is more c 12    than driving or flying．Each train has special windows to k 13   out ultraviolet（紫外线）light and sandstorms．Thin air m 14   you feel sick．To stop this f 15   happening, the train gives oxygen（氧气）through its air-conditioning system．If you still feel sick, you will find oxygen masks near the seats．