問題詳情：
假定你是李華，你美國的筆友Tom來信説他要一份有關*留學生回國情況的調查報告，向你詢問有關情況。請你根據下面圖表的內容給他寫封回信，説明相關情況，並分析其原因。
注意：1.詞數100左右；
2．可以適當增加細節，以使行文連貫；
3．開頭和結尾已給出，不計入總詞數。
參考詞彙：人才迴流reversal of the brain drain；海歸人員returnee
Dear Tom，
How are you doing? In your last letter, you asked me about the reversal of the brain drain in China,
Best wishes!
Yours，
Li Hua
【回答】
【寫作指導】 本篇書面表達屬於應用文，要求寫一封回信。首先，根據提示可知，本文是一篇書信：你美國的筆友Tom來信説他要一個有關*留學生回國情況的調查報告，向你詢問有關情況。請你根據圖表的內容給他寫封回信，説明相關情況，並分析其原因。其次，根據寫作要求確定關鍵詞，如relevant information, witness a boom等。另外，根據圖表提示及關鍵詞(組)進行遣詞造句，注意主謂一致和時態語態問題。最後，連句成文，注意使用恰當的連接詞進行句子之間的銜接與過渡，書寫一定要規範清晰，保持整潔美觀的卷面是非常重要的。
(精*範文)
Dear_Tom，
How_are_you_doing?_In_your_last_letter,_you_asked_me_about_the_reversal_of_the_brain_drain_in_China,_so I'm writing to introduce some relevant information to you.
There has been an increasing number of returnees since 2014. In 2014 alone, about 6.93 million returnees returned to China. Between 2015 and 2016, there were about 24.33 million coming back home. On top of that, the year 2017 witnessed a boom with a total of 18.62 million returnees.
This trend results from three reasons. Firstly, our government values returnees and has carried out a series of preferential policies, offering them opportunities to achieve success in their career. Secondly, they can enjoy ideal living and working conditions here in China. Most importantly, their roots are here in China.
I hope my introduction above can be of some help to your survey.
Best_wishes!
Yours，
Li_Hua
知識點：圖表作文
題型：書面表達
