A：A doctor.
B：A pilot.
C：A teacher.
三角形的面积等于平行四边形面积的一半。
变形虫是单细胞生物，虽结构简单，但能表现出一系列的生命活动．下列关于变形虫生命活动的叙述，错误的是（ ）
六一期间，某公园游戏场举行“迎奥运”活动．有一种游戏的规则是：在一个装有6个红球和若干个白球（每个球除颜色外其他相同）的袋中，随机摸一个球，摸到一个红球就得到一个奥运福娃玩具．已知参加这种游戏活动为40000人次，公园游戏场发放的福娃玩具为10000个．
（1）求参加一次这种游戏活动得到福娃玩具的概率；
（2）请你估计袋中白球接近多少个？
A
Linda，14
My mother does most of the housework like cooking and folding the clothes.My father can only do the washing，sweep the floor and take out the rubbish.He really needs to learn how to do the housework.
Celina，13
My mother and my father do 50% of the housework each.My mother does the washing and cleans the living room.My father makes the bed and drives me to school.
Paul，16
My father doesn't do a lot but he tries to help.He hangs__up the clothes after my mother washes them and my mother is happy that he always gives her a hand.
Bill，15
My mother is a doctor.She is busy with her work every day，so she has little time to do the housework.In fact，she isn't good at doing it.So my father has to do most of it.Sometimes my grandmother comes to help.
