题目内容：

Once, African lions were the kings of the jungle. But every day, they lose more and more of their home to humans. A new study done by Duke University shows that humans have taken over much of the lions habitat.

Lions live on the African plains, which are called savannas. In the past 5 years, the number of people living on the Savannas African plains has grown rapidly. At the same time, the number of lions has dwindled quickly.

The research team at Duke University used detailed pictures taken by satellite to carefully examine the African landscape. They were able to see very small farms and towns that are taking over the once-open plains. Lions need wide-open spaces to hunt. As the number of people and towns has increased, the African plains have become less welcoming to lions. The number of lions has dropped from about 100, 000 in 1960 to 32,000 today. West Africa has seen the largest drop ——fewer than 500 lions remain there.

Researchers worry that the number of lions will decrease even more as the number of humans moving onto the savannas increases. People and lions living closely together have to compete for natural resources like water and food. Towns and farms that take over hunting grounds could force the lions out of those areas completely. Often, lions with no other sources of food will kill farm animals. Farmers will then kill the lions to protect their animals. African lions are also threatened by poachers, who hunt animals illegally. Many poachers hunt lions for sport or to take their fur.

One of the authors of the Duke University study is conservationist Stuart Pimm. Pimm believes the group’s research can be helpful in planning ways for people and lions to share the African plains. One solution is to build higher fences to keep lions away from farm animals. African countries can also expand and better protect their wildlife reserves so that lions have safe places to hunt.

1.The underlined word“dwindled”in Paragraph 2 can be best replaced by______________.

A. grown    B. changed

C. doubled    D. decreased

2.According to the study done by Duke University,______________.

A. there are 100, 000 lions on the African plains

B. African lions are losing their habitat to humans

C. more and more people are moving out of Africa

D. the number of lions in West Africa has increased

3.The following are solutions mentioned in the passage to protect lions EXCEPT________.

A. expanding wildlife reserves

B. avoiding conflict between lions and farmers

C. preventing people from hunting lions illegally

D. stopping people from moving into the African plains

4.Which of the following might be the best title for the passage?

A. Losing African lions    B. Moving out of Africa

C. The kings of the jungle    D. The problems of Africa