题目

假如你是李华，你的英国网友Jack 询问你们学校前两周赴杭州的研学之旅(Study Tour)。 请你结合研学经历给Jack 回一封信。内容包括：1）研学中的活动；2）你参加研学的感受；3）研学的收获。注意:1）词数80左右；2）可以适当增加细节，以使行文连贯。 答案：Dear Jack,I am glad to have received your letter. I am writing a letter to tell you about our study tours to Hangzhou organized by our school two weeks ago. We first went to Hangzhou West Lake, where the scenery is beautiful! We also had lots of activities, such as climbing the mountains and studying plants. The travel was both pleasant and educational. Personally, I think study tours play a criti先化简，再求值．（x+2）2-（x+1）（x-1）+（2x-1）（x-2），其中x=-3．