题目内容：

    In the U.S. state of Washington, a road called Interstate 90 cuts through a wild, mountainous area to reach the city of Seattle. For the area's many kinds of animals, the busy highway greatly limits their movements. Crossing 1-90—as the road is called—is a risky but sometimes necessary act. But soon, animals will have a safer choice for crossing the road. They will be able to go above it.

To help the animals, the state is finishing work on its largest-ever wildlife bridge. The 11-meter-tall, 20-meter-wide structure begins in the forest. It forms two arches above the highway, one for each direction of traffic. Workers are adding fencing and plants to help guide the animals across the bridge. Two-meter-thick walls will help block noise from vehicles below.

The 1-90 Bridge is part of a growing number of wildlife crossings across the United States. Some are fences, some are overland bridges, and some are underpasses. They all aim to keep drivers and animals away from each other. Collisions between animals and drivers are rarely deadly to people. But they are often deadly to wildlife. In Canada's Banff National Park, studies have found that wildlife crossings reduce the area's animal-driver collisions by 80 percent.

Most of the wildlife bridges are in western states. But experts have noted many other areas that have a need for such paths. Jen Watkins, whose organization has helped campaign for animal crossings, says ftind for more crossings is "the number-one barrier."

Patty Garvey-Darda of the U.S. Forest Service has worked on the 1-90 crossing from the start of the project. She says the $6- million bridge will one day pay for itself because the highway will not have to be fully or partly closed each time a large animal is struck. She said, 4tIf you shut down Interstate 90, you shut down interstate commerce.”

1.What is the purpose of building the bridge over “Interstate 90”?

A. To reduce human deaths in crash with wildlife.

B. To prevent wildlife from being struck by vehicles.

C. To arouse public awareness of wildlife protection.

D. To provide a safer choice to cross the risky road.

2.According to Jen Watkins, what is the biggest challenge in crossing construction?

A. Finding ways to help guide animals across the bridge.

B. Collecting money to build more wildlife crossings.

C. Locating areas to construct appropriate crossings.

D. Encourage drivers to obey the regulations of traffic.

3.What do the underlined words in Paragraph 5 imply?

A. The bridge will prove to be well worth the high price.

B. Expense for building such bridges will be reduced.

C. The bridge will greatly promote trade and commerce.

D. Lives saved through the bridge are definitely beyond price.