题目：一种动物（或题目自拟）

要求：1．表现动物伟大的母爱。2．围绕中心把内容写具体，语句通顺。（450字左右）

如图，AB和CD分别是⊙O上的两条弦，过点O分别作ON⊥CD于点N，OM⊥AB于点M，若ON=$\frac{1}{2}$AB，证明：OM=$\frac{1}{2}$CD．

临床上根据病人病情的需要，有针对性的选用不同的血细胞成分或血浆成分进行输血．对于贫血、创伤性失血、大面积烧伤、血小板功能低下者，应分别输入的血液成分是（    ）

    Here are the messages Lois took for people in her office.

Message For Mr. Ford     Date (日期) July 2nd

Time 12:10 p.m.

（）Urgent(紧急的)  (√)Not urgent

（）Don't call back   (√) Call back at 545-1245

Message: Mr. Gomez of Big World Bank called. He wants to meet with you tomorrow.

Message For Ms. Lee     Date July 2nd

Time 12:15 p.m.

(√)Urgent          （）Not urgent

（）Don' t call back   (√) Call back at 267-3722

Message: Mr. Hiram needs to cancel (取消) today's meeting. He wants to have it at 9:00 a.m. tomorrow.

Message For Mr. Green   Date July 2nd

Time 12:25 p.m.

（）Urgent          (√)Not urgent

(√)Don't call back   （）Call back at 554-2781

Message: Dr. Jee's office called to remind (提醒) about the appointment (预约) on Friday.

Message For Ms. Brown   Date July 2nd

Time 12:40 p.m.

(√)Urgent         （）Not urgent

(√)Don't call back   （）Call back at 681-7561

Message: Your daughter's school Called. Susie doesn't feel well. Please pick her up.