题目

假定你是李华，你与你班的交换生Mike在一年的同窗生活中建立了深厚的友谊，上个月他 回国了。请你用英文给他写一封信。内容包括：1）表达你的想念；2）回顾你们在一起的美好时光；3）邀请他再来中国。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 Mike, How is everything going? I have been missing you since you returned to your country. During your stay in our class, I felt very happy to get along with you. With your kind help, my English has improved a lot. Besides, we visited many interesting places in our city, which is still fresh in my memory. With the approach of Mid-Autumn Festival, I really hope you can come to my city again a9．水平地面上两个质点甲和乙，同时由同一地点沿同一方向作直线运动，运动的v-t图象如图所示，下列判断正确的是（　　）A．2s前甲比乙运动快，2s后乙比甲运动快B．在2s时乙追上甲C．在4s时乙追上甲D．在第4s内，甲的平均速度等于乙的平均速度