临床上"见肝之病，知肝传脾，当先实脾"的防病原则属于（）
A.未病先防
B.既病防变
C.调理阴阳
D.扶正祛邪
E.治病求本
参考答案：B
Read and fill in the blanks. （读句子，在横线上填上相应地点的序号）
A. playground B. library C. garden D. canteen E. teacher's office
1. Look ! Lily is watering the flowers in the ________.
2. Mike reads story-books in the ________ every day.
3.11 Yan goes to the ________ to hand in her homework every morning.
4. After school, Li Lei plays football on the ________.
5. At noon, every student has lunch in the ________.
经过圆x2+2x+y2=0的圆心C，且与直线平行x+y=0的直线方程是[ ]
A.x+y+1=0
B.x-y+1=0
C.x+y-1=0
D.x-y-1=0
