假定你是李華，為走進自然，了解文化，增強體質，你校將在暑假期間組織到泰山進行研學旅行（educational excursion）。請給你校外教Peter寫封郵件，邀請他參加。內容包括：
1.活動目的；
2.具體安排。
注意：1.詞數100詞左右；
2.可適當增加細節，以使行文連貫；
3.開頭和結尾已給出，不計入總詞數。

【考點】提綱作文．

【答案】Dear Peter，
Our school is planning an educational excursion to Mount Tai from August 6 to August 10 during this summer vacation．I can't wait to invite you to take part in it．
     As we know，we students are spending most of our time on the campus．As a result，we are almost cut off from the outside world．Hopefully，the excursion will provide us a good chance to get closer to nature，which will definitely contribute to our physical and mental health．What's more，the excursion will surely broaden our horizons by experiencing the local cultures．
     I believe the excursion will be both exciting and rewarding．And we're eagerly expecting your coming．
Yours，
Li Hua．