题目内容：

China’s high-tech buildings can be seen everywhere in places like Beijing and Shanghai, but a few hundred miles away in Shanxi province, some three million people still live in caves.

These simple homes often dot the countryside in small, hard-to-find groups, but in places like Lijiashan, where hundreds of caves are on nine different levels of a hillside, it is possible to find whole villages made up entirely of cave livers.

People have been living in caves in Shanxi for around 5,000 years, and it is believed that at one time a quarter of the population lived underground. These days around one-twelfth live in caves and for many of them, life is almost as it was for their ancestors.

Lijiashan, a 550-year-old cave village is typical. Like most cave villages, there is still no running water, meaning locals are using muddy water of the nearby Yellow River. Most homes still have paper windows rather than glass ones. Inside, their owners sleep on large stone beds, known as kang; cool in the summer, but fires can be lit inside them during the winter months.

Lijiashan once housed 600 families. But now there are just over 40. Mr Li’s family has lived in Lijiashan for six generations. After his kids left the village to find work elsewhere, he and his wife turned their 180-year-old home into a guest house with cave bed-rooms where Chinese art students stay when they come to paint the unusual village landscape.

“The only people left here now are old people,” he said, “As soon as the children grow up they leave. They don’t mind living here by the Yellow River. Sometimes they just move down the road. But they want to live in new apartments, not in these old caves.”

1.According to the passage, in Lijiashan________.

A. some three million people still live in caves    B. hundreds of caves are hard to find

C. all the villagers are cave livers    D. people live in small groups

2.In a typical cave village_________.

A. people usually use water of the river    B. the houses have glass windows

C. people sleep on the ground    D. there is running water

3.Why do the families in Lijiashan become fewer and fewer?

A. Because old people have to leave their homes to have a better life.

B. Because the students go to school in the city.

C. Because caves are not fit to live now.

D. Because young people don’t want to live there any more.

4.The underlined word “landscape” can probably be replaced by_______.

A. animal    B. scenery    C. clothing    D. window