题目

Question: I have been learning English for about 7 years.    36    And I still can’t make myself understood in English. However, I love learning English. How can I learn English well? Please help me. Answer: Many people have asked me this question. 37   Here I will give you several tips for learning English. ●    38    First of all, you must want to learn. If you are not interested in learning English, no class will help you and no book will help you. So you have to be honest with yourself. Ask yourself, “Do I really want to learn English?” If you can’t answer 计算物体在下列时间段内的加速度。（取初速度方向为正方向） （1）以40m/s做匀速直线运动的汽车，遇紧急情况刹车，经8s停下。 （2）一小球从斜面上由静止下滑，3s末滑至底端，速度为6m/s。