中新网2016年3月26日报道，浙江孝亲衢州女孩蓝微，本该依偎在父母身边，在悉心照顾下度过童年，却独自一人肩负起照顾瘫痪母亲的重任。蓝微说，在老师和好心人的面前他们是强者，她是弱者；而在妈妈、外公面前，她是强者，她有责任、有义务去照顾他们。蓝微以实际行动告诉我们（    ）

①要时刻不忘父母的养育之恩                        ②父母生病了才需要子女照顾

③孝亲敬长是每个中国公民的法律义务        ④孝亲敬长是中华民族的传统美德

如图，已知AB是圆O的直径，∠BAC=32°，D为弧AC的中点，那么∠DAC的度数是

将一洋葱表皮细胞置于30%的蔗糖溶液中，随着其质壁分离过程的进行，该细胞的吸水力的大小就会

非0自然数的约数至少有两个．

     My name is Danny. I'm from England. I am eleven. I'm tall with black hair. I have two big eyes. My fax number is 010-74862635.

     (Hello! I am Jane. I'm from the USA. I have a round face and two big eyes. I'm short and thin. I'm twelve. My parents work in Beijing.

    Look at the photo. Who's the girl in it? It's me, an English girl. My name is Amy.

    I'm in Grade Seven. I'm twelve. My home phone number is 022-43765986. I have a round face and long, black hair. I like Chinese very much, and I'm very good at it.

    Who am I? I'm from Japan. My name is Yukio. I'm thirteen. Now I'm in Beijing. I'm short, and I'm very heavy(重的). I have two short legs.