Earlier this month, California police cleared what was said to be the largest homeless encampment in the United States. About 200 homeless people were living at the camp in San Jose, California. Officials said police officers and city workers acted because the area was unclean.
The homeless people were living near Silicon Valley, the country's high technology center. Some people there have made millions, even billions of dollars from high-tech devices and services. But others have no money and no place to live.
Federal officials believe there are hundreds of thousands of homeless people nationwide on any given day. Each one lacks a permanent place to live. Reasons for homelessness can include the high cost of housing, poverty and unemployment. Other reasons are mental health problems and just plain bad luck.
In Los Angeles, a group called PATH searches along flood channels and major roads for homeless camps.. Its workers look for people who have no permanent shelter.
Jorge Guzman was one of the people hoping to help the homeless. He says they make their camps where they are not seen -- behind buildings or in forests or parks.
"They just don't want to be noticed. They're doing their thing out here and, you know, they're just trying to survive."
City workers periodically clear away small trees and plants, uncovering homeless campers. Workers in Whittier try to move people out of homeless camps and into a home of their own. But housing is costly. Still, worker Tomasz says he has been able to help some people.
"It's really good to see the steps when people are leaving their encampments and they're transitioning to either transitional housing, and after when they obtain their own housing."
But there are many other homeless people still living on the streets or in camps, moving when their campsites are taken down.
Why did California police clear the homeless encampment?

A．Because the area was unclean.

B．Because the homeless people often fight.

C．Because the government has built new houses for them.

D．Because they badly affected the image of the city.

Which is NOT the reason causing homelessness?

A．Mental health problems	B．Plain bad luck
C．Being abandoned.	D．The high cost of housing,

According to the passage ,where may the homeless live?

A．In buildings behind parks.

B．In camps in forests.

C．In apartments near Silicon Valley

D．In permanent shelters.

We can describe Tomasz as ____.

A．generous	B．honest
C． grateful	D．helpful

Which of the following can replace the underlined phrase “take down”?

A．Write down.	B．Break down.
C．Pull down.	D．Set down.