Li Chunlin，a farmer，used to live in a poor village in the north of Shaanxi．In the 1980s，he went to Shenzhen to make a living with his wife．

Years later，they became rich and returned to their hometown．To their surprise，the land around the village was covered with sand．That made them feel sad．After thinking carefully，Li and his wife made up their minds to fight against the sands．

They bought thousands of young trees and planted them around the village．However，only a few survived（存活），because the trees were not regularly watered．But how to get water was a big problem．They dug a well（井） but it became dry soon．Then they asked a drilling team to dig a deep well．Clear water appeared，but their money was used up．They couldn't afford to buy young trees．They went to several banks for help but got nothing．Finally they turned to a friend who was also from the village．The friend had a big business．Learning what they were doing，their friend was moved and decided to do something for their village too．So he offered the money they needed．

With the money，they bought trees and had them planted．They looked after the trees as if they were their own children．After some time，green leaves came out．When the villagers saw the changes，some started to join Li and his wife in the fight．Then more joined．Years went by．And now larger areas around the village are covered with green trees．

46．When Li and his wife returned from Shenzhen，they were sad because　　．

A．	the land around the village was covered with sand．
B．	they didn't have enough money to buy trees．
C．	their village was not as beautiful as Shenzhen．
D．	they didn't have enough water to drink．

47．Which of the following is TRUE according to the passage？

A．	Li and his wife dug a well with enough water themselves．
B．	Li and his wife got much money from the bank．
C．	The villagers didn't join Li and his wife in the fight．
D．	Their friend gave Li and his wife some money to buy trees．

48．This passage is mainly about how Li and his wife　　．

A．	tried different ways to find water
B．	made money in Shenzhen．
C．	fought against the sands．
D．	bought and planted trees．