"It's a spot check not only for the departure floor, but also the arrival floor - you'd be checked even if you're in the airport to pick up friends," said a staff member at the Pudong airport inspection center who declined to give his name.

Shi Daoxiong, spokesman for Shenzhen Airport (Group) Co, operator of Shenzhen Baoan International Airport, said the inspection only takes a few seconds.

"The inspection is a regular part of instructions from the Civil Aviation Administration of China. We used to run the check three days a month," he said.

Shi still advises passengers to arrive at the airport about half an hour earlier.

Starting on Monday, passengers at Sanya Phoenix International Airport in Hainan province have to go through extra security checks at the entrances of domestic and international terminals, the airport said.

Some entrances will be closed temporarily, and all others will be for one-way traffic, the Sanya airport said.

Questions:

1. Why was security stepped up at airports in China?

2. What are some extra security measures?

3. Why did the man set off a bomb?

Answers:

1. A man set off a bomb on Saturday at Beijing Capital International Airport.

2. Explosives checks are being done at the entrances to the arrival and departure halls at the airport.

3. He said he was attacked and paralyzed by police in Dongguan, Guangdong province, in 2005, and his lawsuit against the police failed in 2006.

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