下列有关造血干细胞中物质运输的途径，可能存在的是(  )

人们生活水平逐渐提高，家用电器不断增多，在家庭电路中，下列说法正确的是（  ）

根据句意，从方框中选择合适的单词或短语，并用其适当形式完成句子。                      

(1)Designs for the new gym will be ____  in the library. 
(2)Jim ____  his father. They are both clever and a bit quiet.
(3)I was waiting for the school bus but it didn't come. Then I ____  it was Saturday.
(4)Beijing is cold this time of year. You need to ____ warm clothes if you go there.
(5)Don't forget to ____  the door if you are the last one to leave the classroom.

“风声、雨声、读书声，声声入耳；家事、国事、天下事，事事关心。”这副对联启示我们（  ）