随着山东省蓝色经济的发展，拥有“蓝天、碧海、金沙滩”的日照市越来越引起人们的关注。读图完成下题。

已知方程（a﹣4）x^|a|﹣3+2=0是关于x的一元一次方程，则a=​ ____

   I am Bill Jones. I am a teacher of English. My wife is Linda Jones. She is a nurse. We have a daughter and a son. We have many friends.
Look! These are my friends. This is Mr. Black. He is a worker. He works in a shoe factory He makes shoes there. That’s Mrs. Black. She is a worker on a farm near here. The girl is their daughter. She is a student. She is thirteen. The boy is their son. He is a young soldier（战士）. His name is Carl Black.

克隆又称“体细胞的无性繁殖”。，请问多莉的外貌最像谁   （  ）

在2007年以前，北京市的林木覆盖率将达到50%，人均绿地50平方米。下列措施中，能有效提高北京林木覆盖率和人均绿地的是（   ）