题目内容：

    Going on vacation can be challenging for people with physical disabilities. Hotels aren't always clear about how accessible (可进入)they are and the adaptive equipment needed to participate in certain activities can be expensive or difficult to obtain.

This is where the online travel marketplace Wheel the World comes in. The website connects physically disabled people with special tour packages, depending on the person's needs.

Today Wheel the World offers over 30 accessible destinations in the U.S. and abroad. They've served almost 900 disabled people, their family, and friends. Travelers can sign up for trips to destinations such as New York, Hawaii, Paris, London, and Kruger National Park in South Africa. Trip packages can include adaptive equipment such as wheelchairs, which can be used on the beach and in the ocean, and kayaks (皮艇)，which can help those disabled to kayak. The team also checks the accessibility of destinations themselves, evaluating things such as door widths, bed heights, bathrooms' accessibility and if lifts are functioning.

Silberstein, the company's founder, says there are some trips that are suitable for blind people, though Wheel the World focuses on people with mobility issues. And in the future, they plan to include trips for people with hearing loss, and people with emotional disabilities. “One of the biggest barriers for travelers with physical disabilities is finding information about accessible trips, which is a gap Wheel the World aims to close,” says Silberstein.

Wheel the World is working to enlarge tours in Europe-currently their website lists London and Paris as the only destinations on the continent, but their eventual goal is much higher. “We want to allow millions of disabled people to travel to thousands of destinations,” Silberstein says.

1.What is the function of the first paragraph?

A.To show the great success Wheel the World has gained.

B.To tell us the difficulties the disabled face in life.

C.To introduce the background of Wheel the World.

D.To remind us of the problems with hotel service.

2.What does Wheel the World focus on?

A.Collecting travel information for tourists.

B.Increasing the online sales of wheelchairs.

C.Extending travel business to the whole world.

D.Providing proper travel services for the disabled.

3.What does the text mainly tell us?

A.Silberstein has made significant contributions to global tourism.

B.Wheel the World helps people with disabilities enjoy their vacations.

C.Advanced equipment is enabling the disabled to travel around the world.

D.Tour packages intended for blind and deaf tourists have won wide recognition.

4.Which of the following can best describe Silberstein?

A.Thoughtful and full-hearted. B.Determined and humorous.

C.Flexible but aimless. D.Creative but hesitant.