选词填空.

1. this  that

(1) _________is a pencil.  Look !  It's over there.

(2)_________ is my book. The book is here.

(3)Mom, _______ is Sonia. Sonia,  ________ is  my mother.

2. no  not

(1) -Is this your pencil?

     - ________.It is ________.

(2) This is a dictionary.  It's _________  a book.

肾脏先天性异常中最常见的是肾缺如、异位肾、重复肾和融合肾，请分别叙述其超声声像图表现。