根据短文内容判断下列句子正（T）误（F）。

     My name is David Black. I am an English boy. My family are in Beijing. My father and mother work there.

My father is an engineer (工程师) and my mother is a teacher. I have sister but no brothers. My sister and I

are students of a middle school in Beijing. We love China. We have a nice house in Beijing. We have a TV and

a Computer. My room is big. There is a bed, a desk and two chairs in it. My books are on the bookcase. I have

a phone on my desk. There are some pictures on the wall. I like my room and I like these pictures very much,

too.

( )1. There are four people in David's family.        

( )2. Mr and Mrs Black have a son and a daughter.     

( )3. Darid's mother works in a school in Beijing.    

( )4. There are two desks and a chair in David's room.

( )5. There is a radio on David's desk.               

缺氧最典型的表现是（）。

A.发绀

B.休克

C.意识障碍

D.呼吸困难

E.消化道出血