平方得81的数有（ ）个，（ ）（填“有”或“没有”）立方得-8的有理数。
题型：填空题
问题：
平方得81的数有（ ）个，（ ）（填“有”或“没有”）立方得-8的有理数。
题型：填空题
WASHINGTON—A chaotic scene unfolded near the U S．Capitol（美国国会大厦）on Wednesday after police shot and killed an armed man in what authorities described as a rush hour traffic stop that turned deadly．
U S．Capitol Police spokeswoman Sgt．Kim Schneider said the unidentified 35-year-old man sped away in a white car after being stopped a few blocks from the Capitol．The man drove the wrong way down a street and c
rashed into a police car in a heavily guarded area about a block north of the Capitol grounds，striking two officers with his car along the way，she said． Police then opened fire after seeing the man hold up his handgun and refuse to put it down，said Schneider，who described the melee（人群）as“very fast moving”．“The officers felt they were being threatened-they were in fear for their lives，”Schneider said．
She did not know if the man ever fired at police．He was taken to a hospital，where he was pronounced dead．
The officers who were hit——one of whom was on a motorcycle——had minor injuries，Schneider said．
The late afternoon scare occurred as lawmakers were wrapping up a third day of hearings for Supreme Court nominee Sonia Sotomayor．Police briefly closed up part of the Capiltol as a precaution，but the buildings were reopened about a half—hour later．Authorities said the
shooting was not related to the Capitol．
Carol Lanigan，of Toledo，Ohio，described how she save a white car come flying down the street with two police cars chasing it．She said she heard about four or five shots．
“There were so many gunshots being fired，my family got down．”said Robert Drumm of Oklahoma，who was touring the nation’s capital with his family．
Numerous emergency vehicles came together quickly on the area．
Lanigan’s husband，Dale Lanigan，described a similar scene，saying that as the car sped past him the driver had one hand on the wheel and it looked like he was reaching for something．
小题1:What can be learned from the passage？
A．Three police officers were hurt in the shooting．
B．The shooting had something to do with the Capitol．
C．The Capitol was unprotected when the gunshot happened．
D．The gunshot case had nothing to do with the Capitol．小题2:When the case happened， ．
A．CaroI Lanigan heard five shots exactly
B．many emergency vehicles appeared in the area
C．Robert Drumm stopped to tour the nation’s capital by himself
D．Carol Lanigan didn’t come to the scene小题3:Which of the following is closest in meaning to the underlined word“chaotic”？
A．disordered
B．accessible
C．lifelike
D．arranged小题4:Which of the following is the best title of the passage？
A．A police accident near the U．S．Capitol
B．Defend the U．S．Capitol
C．Police chasing the peace breaker
D．Armed man was shot near the Capitol by police