题目内容：

    Scientists say a huge percentage of bird species are in danger because their habitats are disappearing.

The scientists studied the migration, or flight, paths, of almost 1,500 species and decided that 91 percent of them passed through dangerous areas. The major danger for migratory birds is development. Building and paving have covered over nature where birds stop and feed as they move from one part of the world to another.

For example, a bird called the bar-tailed godwit migrates from its breeding grounds in the Arctic. It flies all the way to Australia and New Zealand. The problem, according to investigators, is that many of these small birds die along their migration because they don't have a safe place to eat and rest. There is no place to restore their energy for the next part of their journey. "They simply perish along the way," says one of the scientists.

Countries in North Africa, Central Asia and those along the coasts of East Asia are having the most difficult time conserving land. The scientists say these countries do not have enough areas that are safe for birds.

"Our world gets poorer every time we lose a species,’’ one of the scientists says.

The researchers say countries need to work together and come up with safe stopover areas for birds that pass through their boundaries.

For example, one country might have preserved safe zones for migrating birds. But a neighbor country might not. A bird might die.

One scientist who is not involved in the report tells the Los Angeles Times that while some habitats are changing, more work can be done to make urban areas safe for birds. He says small changes—like planting more native plants or keeping cats out of areas birds would be likely to use—could make a big difference.

1.What’s the major danger for migratory birds according to the passage?

A.They can’t find enough food along the way.

B.They have lost their way because of human development.

C.Human development has occupied their natural habitats.

D.They are sometimes struck by human diseases.

2.What do we know about bar-tailed godwits?

A.They fly from the Arctic south to Australia every year.

B.They can pick out good resting place along the way.

C.They have died out because of human hunting.

D.They have their conserved land in Australia.

3.Which of the following is closest in meaning to the underlined word "perish" in Paragraph 3?

A.Continue. B.Die.

C.Settle. D.Migrate.

4.What suggestion does the scientist say to the Los Angeles Times?

A.Countries working together to protect the sea.

B.Protecting the original habitats for the migrating birds.

C.Reserving some land for the birds to rest along the way.

D.Planting some native plants for the migrating birds to use.