閱讀下面短文，完成相關(guān)任務(wù)。
When you look at the map of the Tengger Desert（騰格爾沙漠），you will see a "green wall" in the southwest.It products Wuwei City of Gansu Province from sandstorms.
    With an area of over 8，000 mu，the "green wall" was planted by Wang Tianchang and his family.They have done this great job for over 20 years.
    In his seventies now，Wang Tianchang is an ordinary farmer from Gansu Province.He and his family live in a small village close to the Tengger Desert.People there once suffered a lot from sandstorms for a long time.They destroyed their farms and houses.To hold back sand，Wang Tianchang decided to do somethjye.aig.In 1999，Wang planted his first plant in the desert and started his life of sand control.
    It is never easy to bring life on the desert.In the beginning，Wang had no experience with desert plants.The sand covered the holes he dug very soon.The wind rooted out the seedlings he planted even on the second day he had done.It was challenging，but he never gave up.
    His family helped him a lot，especially his son Wang Yinji.To plant more trees，the two of them even lived in the desert for about six years.They found grass to sleep on as their beds.
    Thanks to Wang's "green wall"，Wuwei City sees much fewer sandstorms.Wang has brought back not only green to the desert but also hopes to the people there. He is our hero!
（1）How long have Wang Tianchang and his family planted the "green wall" ？

For over 20 years.

For over 20 years.

（2）Why did Wang Tianchang want to control the sand？

Because he wanted to protect the farms and houses and hold the sand back.

Because he wanted to protect the farms and houses and hold the sand back.

（3）Who helped Wang Tianchang a lot when planting the "green wall"？

His family，especially his son Wang Yinji.

His family，especially his son Wang Yinji.

（4）把短文劃線句子翻譯成漢語(yǔ)。

王天昌不僅把綠色帶回了沙漠，而且還給沙漠里的人們帶來(lái)了希望。

王天昌不僅把綠色帶回了沙漠，而且還給沙漠里的人們帶來(lái)了希望。

（5）給短文擬一個(gè)恰當(dāng)?shù)臉?biāo)題。

Wang Tianchang builds a "green wall" in the desert.

Wang Tianchang builds a "green wall" in the desert.