某海上救援队收到一远洋捕捞船的求救信号，得知轮船遇难地点在（20ºS，160ºW）。在右图中表示遇难轮船所在位置的是（   ）

透析型人工肾起关键作用的是人工合成的血液透析膜，其作用是能把病人血液中的代谢废物透析掉，这是模拟了生物膜的（ ）

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.

 下列对动物类群特征的描述中，错误的是（ ）