Space Museum.The Smithsonian has the first supersonic (超音速的) airliner, the Concorde, which could cross the Atlantic Ocean in fewer than four hours.

　　The longest beard

　　The Smithsonian is home to the longest beard ever recorded.Norwegian immigrant Hans Langseth had grown his facial hair to 18 feet 6 inches by the time he died in 1927.The Smithsonian has 17 feet 6 inches of it because, even though Langseth's final wish was to have his entire beard preserved, his family decided it wouldn't be right to bury him clean­shaven.

　　Time and admission：

　　Smithsonian museums are open every day of the year except December 25 unless otherwise noted.Most museums are open daily from 10 a．m.to 5：30 p．m.The American Art Museum and Portrait Gallery are open 11：30 a．m.to 7 p．m.

　　Admission is free for all Smithsonian museums and the zoo in Washington, D．C., and the American Indian Museum's George Gustav Heye Center in New York.A fee is required at the Cooper­Hewitt, National Design Museum in New York (Members and children under 12 are admitted free)．

　　5．According to the text, the Smithsonian Institution ______.

　　A．was founded in honor of an American

　　B．has all its museums in Washington, D．C.

　　C．is most famous for its fine collection of art

　　D．was funded with the money from James Smithson

　　解析：选D　细节理解题。根据第二段的"named after James Smithson"和"he left his entire fortune to the United States to build an institution 'for the increase of knowledge'"可知，史密森尼博物院建立的资金来自于James Smithson去世后留下的钱。

　　6．The Smithsonian failed to get the entire beard of Hans Langseth's due to ________.

　　A．the words in his last will

　　B．the rejection of his family

　　C．the tradition of Norwegians

　　D．the bad condition of the beard

　　解析：选B　细节理解题。根据文中的"Langseth's final wish was to have his entire beard preserved, his family decided it wouldn't be right to bury him clean­shaven"可知，虽然Langseth希望把自己的胡子都保留下来，但他的家人还是希望他能留点胡子下葬。

　　7．What do the objects mentioned have in common?

　　A．They were from South Africa.

B．They are in the same museum.