已知|x|＜a，|y|＜a．求证：|xy|＜a．
题型：解答题
问题：
已知 |x|＜
|
题型：解答题
A woman decorating her Christmas tree Monday was shot in her left arm when a bullet went through her living room window．Police said the incident occurred at about 5:00 p.m. A .22 caliber shell（口径的弹壳） casing was found across the street from the victim's home．Police did not find a weapon in the neighborhood．
Mrs．Wilma Johnson was treated at a local hospital and allowed to go home．A hospital spokesman said she should recover nicely．She is in her late 50s, divorced, and living with Bob, the older of her two adult sons．Bob wasn’t home at the time of the shooting．
Police will patrol the area more frequently as a result of this shooting．They don't know if the shooting was intentional or accidental．They are asking the public to help if they know anything．They interviewed the neighbors．One neighbor 
said he heard a gunshot, but in this neighborhood, he said, he was used to hearing gunshots．
The police also questioned Mrs．Johnson’s ex-husband, Joe, who lives three blocks away．Joe said if he was going to shoot at his ex-wife, he’d make sure he shot her in her butt（头）．“That’s a target you could hit from a mile away as she is like a Tele-tubby.” he laughed．Despite such remarks, the police spokesperson said Joe is not a suspect at this time．
小题1:What was the woman doing when she was shot?
A．She was decorating her room．
B．She was cooking dinner．
C．She was sleeping in her room.
D．She was decorating her Christmas tree．小题2:Where is Mrs. Wilma Johnson now ?
A．She is in hospital．
B．She is at home．
C．She is in another world.
D．She is in a funeral．小题3:Which of the following is true according to the third paragraph?
A．Some neighbors saw the gunman by accident.
B．The police found the gunman soon after the gunshot．
C．There used to be gunshots in the area.
D．The gunshot happened by intention.小题4:What was her ex-husband’s words “That’s a target you could hit from a mile away”?
A．His ex-wife was too fat
B．He still loved his ex-wife．
C．She was sensitive to any
thing.
D．He hated his ex-wife．