1 . “Birds” and “airports” are two words that, paired together，don’t normally paint the most harmonious picture. So it really raises some eyebrows when China announces plans to build an airport that is for birds.

Described as the world’s first-ever bird airport, the proposed Lingang Bird Sanctuary(保护区）in the northern coastal city of Tianjin is, of course,not an actual airport. Rather，it's a wetland preserve specifically designed to accommodate hundreds-even thousands-of daily takeoffs and landings by birds traveling along the East Asian-Australian Flyway. Over 50 species of migratory (迁徙的）water birds，some endangered, will stop and feed at the protected sanctuary before continuing their long journey along the flyway.

Located on a former landfill site，the 150-acre airport is also open to human travelers.(Half a million visitors are expected annually.) However，instead of duty-free shopping，the main attraction for non-egg-laying creatures at Tianjin’s newest airport will be a green-roofed education and research center, a series of raised “observation platforms” and a network of scenic walking and cycling paths totaling over 4 miles.

“The proposed Bird Airport will be a globally significant sanctuary for endangered migratory bird species, while providing new green lungs for the city of Tianjin.” Adrian McGregor of an Australian landscape architecture firm explained of the design. Frequently blanketed in smog so thick that it has shut down real airports, Tianjin is a city---China’s fourth most populous----that would certainly benefit from a new pair of healthy green lungs•

1. The underlined phrase “non-egg-laying creatures” in Paragraph 3 refers to?

A．Visitors.	B．Designers.
C．Endangered water birds.	D．Planes.

2. What do we know about the airport according to the passage?

A．People cannot watch birds up close here.

B．It is located on a 150-acre landfill site.

C．It functions as an actual airport and a wetland preserve.

D．It provides migratory birds with food and shelter.

3. What can we infer from the last paragraph?

A．The airport will become a permanent home for birds.

B．Tianjin will win worldwide fame in the future.

C．Tianjin’s air quality will improve thanks to the airport.

D．Tianjin will be able to accommodate more people.

4. What is this passage mainly about?

A．Airports shut down and open up.

B．China is to open the first Bird Airport.

C．Airports turn into green lungs.

D．Birds are no longer enemies to airports.