读下图我国四省轮廓图，回答： 1.③云南省2.①广东省3.①广东省4.B
若一人患了流感，经过两轮传染后共有121人感染了流感．按照这样的传染速度，若3人患了流感，第一轮传染后患流感的人数共有（ ） 设这种流感的传播速度是一人可才传播给x人，根据题意有1+x+（x+1）x=121，解得x=10（负值舍去）．3人患了流感，第一轮传染后患流感的人数共有3+3×10=33人．故选C．
求一篇英语作文，假如你是李华请你给美国的笔友TOM写一封信，告诉她你近期的状况包括学习生活并告诉他今年 Dear TomI am very happy to receive your letter.I am fine these days but a bit busy.I am always busy with my study and there are lots of homework to do every day.I work hard and I am interested in all the subjects so I can alwasy get good grades.I often do sports for about twenty minutes after school because it's good for my health and it can help me relax.I am going to take an important exam so that I can get into senior high.So I will try as hard as I can.How about you？YoursLily
