----You park here! Look at the sign, it says “No parking”.
----Sorry, I didn't notice that sign just now.
A：won't
B：needn't
C：mustn't
D：couldn't
长期在平原地区生活的健康人，到西藏高原的最初几天里，血液中数量会明显增多的细胞是（ ）
按照从微观到宏观的顺序来描述，动物体的结构层次是（ ）
