假設(shè)你是李華，你的筆友Jason 對(duì)中國(guó)文化非常感興趣，打算來(lái)中國(guó)參觀一些世界文化遺產(chǎn)．請(qǐng)你根據(jù)所給信息，給Jason寫(xiě)一封電子郵件，介紹洛陽(yáng)的龍門(mén)石窟．
名稱龍門(mén)石窟（Longmen Grottoes）
地理位置位于河南省洛陽(yáng)市南郊的伊河兩岸，離市區(qū)12.5公里．
開(kāi)鑿時(shí)間從北魏至北宋，歷經(jīng)400多年．
藝術(shù)價(jià)值①是中國(guó)古代雕刻藝術(shù)的重要組成部分，現(xiàn)存有窟龕（niche）2300多個(gè)，造像（image）10萬(wàn)余尊；
②反映了中國(guó)古代政治、經(jīng)濟(jì)（economy）、宗教、文化等許多領(lǐng)域的發(fā)展變化．
注意：1．詞數(shù)100左右（開(kāi)頭和結(jié)尾已給出，但不計(jì)入總詞數(shù)）；2．可以適當(dāng)增加細(xì)節(jié)，以使行文連貫．
Dear Jason，
I am glad to know you are coming to visit China．I am writing to recommend one of the World Heritage Sites in China-Longmen Grottoes．

The Longmen Grottoes stand on the banks of the Yi River，12.5 kilometers south of Luoyang City in Henan Province．The carving project began in the Northern Wei Dynasty and lasted for more than 400 years until the Northern Song Dynasty．At present there are over 2，300 niches，more than 100，000 images．The grottoes are an important part of ancient Chinese sculptures，and show great changes in ancient Chinese politics，economy，religion，culture and so on．
The Longmen Grottoes is well worth a visit because of its long history and natural beauty．

The Longmen Grottoes stand on the banks of the Yi River，12.5 kilometers south of Luoyang City in Henan Province．The carving project began in the Northern Wei Dynasty and lasted for more than 400 years until the Northern Song Dynasty．At present there are over 2，300 niches，more than 100，000 images．The grottoes are an important part of ancient Chinese sculptures，and show great changes in ancient Chinese politics，economy，religion，culture and so on．
The Longmen Grottoes is well worth a visit because of its long history and natural beauty．

I hope you'll have a good time in China．
Yours，
Li Hua．