战国时期，秦国的军队围攻赵国都城邯郸。赵国派平原君到楚国求救，平原君的门下食客毛遂非常自信，自我推荐，要求前往。结果，他终于劝说楚王同意援救赵国。后人就用“毛遂自荐”来比喻自告奋勇，自我推荐。这个故事反映了毛遂是个（   ）

B

    Hi,everyone! My name is Linda.I'm 1 English girl.This is a 2 of my family.You can see 3 people in it.These are my grandparents.4 are in the middle of the photo.The tall(高的)man is my father .5 name is Henry.This is my mother,Anna.My parents 6 three children(孩子),Tom,Paul and me.Tom and Paul are my 7.Tom is seven.Paul is three.And I'm six.8 is the girl?She is my aunt.Her name is Betty.She is my father's 9.Oh,Pipi is in the photo,too.Pipi is the 10 of my dog.I like it very much.It's my good friend.

原始生命诞生的重要标志是（　　）