实施承接查验的物业，应当具备什么条件。

In the bubble years, lending standards slipped ______,allowing   many people to put far too much of their income into paying for their housing.

A．delicately

B．dynamically

C．deliberately

D．dramatically

若（k+3）x²+x-2k=0是关于x的一元一次方程，则k=______，x=______．

New York Time —A gunman killed eight people at a mall in Omaha this afternoon and then killed himself,  setting off panic among holiday shoppers,  the police said.

“The person who we believe to be the shooter has died from self-inflicted gunshot wounds, ” Sgt. Teresa Negron of the Omaha Police Department said at televised news.  “We have been able to clear the mall, ” she said. “We don’t believe we have any other shooters. ” The police said that at least five other people had been injured in the shootings. 

She did not give the shooter’s identity. “We are still doing the investigation, ” Sergeant Negron said, adding that the city’s mayor, who was out of town, was on his way back to Omaha.

She said the police received a 911 call from someone inside the Westroads Mall on the west side of Omaha, and shots could be heard in the background. The first police officers arrived at the mall six minutes after the first call, she said, but by then the shootings were over.

It is reported that the gunman left a suicide note that was found at his home by relatives. A law enforcement official who spoke on condition of anonymity (匿名) said the note indicated that the gunman wanted to "go out in style".

The shootings broke the usually banal routine of holiday shopping. The gunman was said by some witnesses to have fired about 20 shots into a crowd. Some customers and workers ran screaming from the mall, while others dived into dressing rooms to hide from the shooter.

Shoppers and store workers were trapped inside the mall, which has roughly 135 stores. Others streamed out of mall exits with their hands raised. President Bush was in Omaha this morning to deliver a speech, but he had left the city by the time the shootings took place.

小题1:Where did the shootings first come out?

A．On a newspaper.

B．In the Internet.

C．In TV news.

D．In a police poster.小题2:What do the underlined words “go out in style” probably mean?

A．Go out of the mall in particular clothes.

B．Walk in the mall with everybody focused on.

C．Go to a socially event by fashionable means.

D．Stop his life in an impressive way.小题3:Which of the following is TRUE according to the passage?

A．Nobody knows why the shooter did so and nothing was found at his home.

B．The city’s mayor happened not to be in the city when the shootings took place.

C．Police arrived at the mall before the shootings were over and rescued customers.

D．The official who showed what the note meant had no request of his own identity.小题4:Which of the following can be the best title of the news?

A．Gunman Kills 8 People, Then Himself at a Mall in Omaha

B．Shoppers in Great Panic before the Holiday

C．Bush Happened to Escape a Shot

D．Shooter Found Dead in a Mall on the west of Omaha

在NH₃、HNO₃、H₂SO₄的工业生产中，具有的共同点是 (    )

A．使用吸收塔设备

B．使用尾气吸收装置

C．使用H₂作原料

D．使用崔化剂

要维持正常的体重，食物的摄取量和是否平衡膳食很有关系。大体计算下，普通成人每天需要3000-5000千卡左右的热量。