复数z满足$z=\frac{2i}{1+i}$, 则$z$等于（　　）

    Today is Monday. The weather is fine, it is sunny all day. I had a busy day. In the morning, I went to school to learn Chinese. After school, I played basketball with my classmates and it made me feel happy because it was great fun! In the afternoon, I went for a walk with my good friend Lily. We went shopping on the way, We bought a lot of food, it was delicious. And I like hot food. I also bought some hot food. I loved the food very much. In the evening, I played tennis with my little brother. He was lovely, I didn't do my homework that day. We had dinner at home, My mother cooked for me. I had a good weekend today. Oh, my name is Bob.

小华想利用暑期游览祖国的大好河山，他设计的游览线路如下面左图，四条游览线路中，能得到右侧地形剖面示意图的是

148－79＝____

5824＋198＝____