根据短文内容选词填空

pleasure，high，serve，what，against，do，succeed，him， ask，increase

　　Help old people across the street，or gently persuade (劝说)　strangers 1 ndline　 spitting，and you may have a chance of seeing Chairman

Mao on Tian'anmen Square and even get his autograph(签名)．

　　That is the story of Learn from Lei Feng，a new online game with China's famous hero as the main role．

　　Different from“shoot-them-up，kill-them-all”idea of many 2 ndline　 online games，this online game encourages thrift (节俭) and polite manners．

　　The story is about a selfless soldier named Lei Feng．He spent all his spare time and money 3 ndline　 the country．Lei Feng died in an accident in 1962 at the age of 22，but he 4 ndline　 so many selfless deeds that the Chinese government decided to make him a model for the nation．

　　“For beginners，sewing socks is the only way 5 ndline　 experience and upgrade (升级)，”said Jiao Jian，a young pupil and online game fan from Guangzhou．“Every time you are improved to a 6 ndline　 level，your clothes will become plainer (朴素的)，”he said．

　　While new online game includes a treasure hunt，you may wonder 7 ndline　 the prize is．It is not a special weapon but a copy of a book by Chairman Mao.

　　Enemies in the game are“secret agents (特务)”．Players can get their power again after fighting such evil forces (罪恶势力)　by talking with the Party secretary，then a final meeting with Chairman Mao 8 ndline．

　　The developer of Learn form Lei Feng said the game was to give students the tools to learn the 9 ndline　 of helping others．

　　The game is just one in a series (系列)　that the developer 10 ndline　 to develop by a government worried by all the violence (暴力)　on the Internet．

　　Other heroes are ready to teach China's youth good values include Zheng He，who led several great voyages (航程)　of exploration as far away as the east coast of Africa 600 years ago．