Marie Van Brittan Brown，an African American nurse living in Jamaica，Queens in the 1960s，was working in shifts，as was her husband，Albert，an electronics technician.When she arrived home late，she sometimes felt afraid.Serious crimes in Queens jumped nearly 32 percent from 1960 to 1965，and police were slow to respond to emergency calls.Marie wanted to feel safer at home.
   With the help of her husband，Marie imagined a device that could be attached to the front door.It would offer four small holes，and through these，a video camera on the inside could view visitors of different heights as the host turned the camera up and down.The camera was connected to a television monitor inside.A microphone on the outside of the door and a speaker inside allowed the host to interrogate a visitor，while an alarm could inform police via radio.
   Closed-circuit television（CCTV），invented during World War Ⅱ for military use，was not widespread in the 1960s，and the Browns proposed using the technology to create the first modern home security system.They filed a patent for their device in 1966，citing（提及）Marie as the lead inventor.It was approved three years later. "The equipment is not in production，" The New York Times reported，"but the Browns hope to interest manufacturers and home builders." That never happened. "The cost of installing（安裝）it widely would be pretty high，" says Robert McCrie，an emergency management expert at John Jay College of Criminal Justice in Manhattan.
   Marie's invention，though it didn't benefit them financially，would earn the Browns a measure of recognition in the technology world：The predecessor（前身）of today's home security systems，it has been cited（引用） in 35 U.S.patents.

（1）What can be learned about Marie？

A

A

A．She lived in a dangerous neighborhood.
B．She worked as an electronics technician.
C．She went home with her husband every day.
D．She was afraid of making an emergency call.
（2）What does the underlined word "interrogate" in paragraph 2 probably mean？

D

D

A．Attract.
B．Frighten.
C．Welcome.
D．Question.
（3）What was the problem with the Browns' system？

C

C

A．It was considered to be a silly invention.
B．It was thought little of by the then police.
C．It was too expensive to be mass-produced.
D．It was illegal to be used by ordinary people.
（4）What can we say about Marie and her husband？

D

D

A．They contributed a lot to CCTV.
B．They were generous and responsible.
C．They helped reduce crime in the 1960s.
D．They were intelligent and worthy of respect.