根据短文内容，判断下列句子是否正确，对的涂（A），错的涂（B）。
    Kate is a little girl. She's only five. She is not at school. She doesn't know how to read or write. But her sister Mary is a student. She knows how to read and write.
    One day, Mary sees her little sister in the room. She is at the table. There is a pencil in her hand. She is writing. “What are you writing, Kate?” she asks. “I'm writing to my friend, Rose.” says Kate. “But how can you? You don't know how to write.” says her sister. “Well.” says Kate, “It doesn't matter. Rose doesn't know how to read, either(也).”
____ Kate doesn't go to school because she is too young.
____ Kate and Mary arefriends.
____ One day, Kate is writing to Mary.
____ Kate can't write.
____ Rose can read.

阅读下面的两段文言文，回答问题。

     【甲】普性深沉有岸谷，虽多忌克，而能以天下事为己任。宋初，在相位者多龌龊循默，普刚毅果断，未有其比。尝奏荐某人为某官，太祖不用。普明日复奏其人，亦不用。明日，普又以其人奏，太祖怒，碎裂奏牍掷地，普颜色不变，跪而拾之以归。他日补缀旧纸，复奏如初。太祖乃悟，卒用其人。

     【乙】景公使圉人①养所爱马，暴死，公怒，曰：“以属②狱。”晏子曰：“此不知其罪，臣为君数③之，使知其罪，然后致之狱。”公曰：“可。”晏子数之曰： “尔罪有三：公使汝养马而杀之，当死罪一也；又杀公之所最善马，当死罪二也；使公以一马之故而杀人，百姓闻之，必怨吾君；诸侯闻之，必轻吾国。汝杀公马，使怨积于百姓，兵弱于邻国，汝当死罪三也。今以属狱。”公喟然叹曰：“夫子释之!夫子释之!勿伤④吾仁也。”

                                                                                    【注释】①圉(yǚ)人：养马的人。②属：交给.   ③数：动词，列举。  ④伤：损害。

如图，矩形ABCD中，AB＝3，BC＝5．过对角线交点O作OE⊥AC交AD于E，则AE的长是（　　）.