阅读理解。

    My family lives in London. In the morning, my father goes to work and we go to school. My father takes

us to school every day. My mother stays at home. She does the housework. She always has lunch at home,

and visits her friends in the afternoon. In the afternoon, we go home from school by bus. My father gets home

from work late. At night my two brothers and I always do our homework. We go to bed at about ten. My

father and my mother usually read newspapers. We can watch TV at the weekend.

1. ____ lunch at home. [ ]

A. My mother has

B. My father has

C. Only the children have

D. All the family have

2. We can watch TV ____. [ ]

A. on Sunday afternoon

B. every day

C. often

D. at the weekend

3. There are ____ people (人) in my family. [ ]

A. three

B. four

C. five

D. six

X线照射到直接FPD上时，X线光子使非晶硒激发出（）

A.可见光

B.电子空穴对

C.荧光

D.正电子

E.低能X射线