免疫学
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先用一个未知数的代数式表示另一个未知数，然后再求出下列每个方程的三组
（1）2（x-y）=5 （2）4x+2y=x-y+1
固结灌浆施工中，灌浆孔灌浆前的压水试验孔数不宜少于总孔数的( )。
A．5%
B．10%
C．15%
D．20%
Museums in Atlanta
Atlanta, Georgia is a great place for visitors seeking a little culture. There are Atlanta museums of all kinds, to interest adults and children. The history of the area is a fascinating one and it is documented in many of the museums. There are also collections of art and science based institutions and displays from the natural world.
The city is famous for many reasons, one of them being the World of Coca-Cola Museum. It's a worldwide product with a long history and the collection contains memorabilia（大事记） and handmade objects. Some of the documents go back to 1905. Visitors can see how a bottling plant operates and there are films about the history of the company. This Atlanta museum has a Pop Culture Gallery that shows paintings with the Coca-Cola image. At the end of the tour, visitors can buy a souvenir at the gift store.
The Atlanta History Center，established in 1926, is most well-known for its civil war collection. There is also the exhibition of folk arts and the displays on the history of golf in the US.
The state is also proud of its famous daughter, novelist Margaret Mitchell. The Margaret Mitchell House and Museum was founded in the house that the author shared with her husband from 1925 until 1932. It was here that she wrote her great book, Gone with the Wind. Much of this Atlanta museum is focused on the 1939 Hollywood film of the book.
Families and school outings are fortunate in having the Fernbank Science Center. It serves the local educational community and the public also enjoys the displays. There are a wide variety of exhibitions, including a collection of dinosaur skeletons, an electron microscope and a Apollo spacecraft. The museum also has an impressive botanical collection.
The Georgia Aquarium(水族馆) is the largest one in the world and almost all the tourists place it high on their travel plan when visiting the city. There are numerous species to see and learn about. The highlights include whale sharks, electric fish, Japanese spider crabs, Californian sea lions and African black-footed penguins.
Atlanta museums have something for everyone and will never disappoint you.
小题1: The underlined word plant in Paragraph 2 refers to _______.
A．factory
B．movie
C．soft drink
D．handmade object小题2:Visitors interested in literature will probably go to _________.
A．The Georgia Aquarium
B．Fernbank Science Center
C．The Atlanta History Center
D．The Margaret Mitchell House and Museum小题3:Visitors who go to Pop Culture Gallery can see _____.
A．exhibition of folk arts
B．pictures of sea animals
C．collections of the civil war
D．paintings with the Coca-Cola image小题4:We can learn from the passage that ________.
A．Coca-Cola is popular with young visitors
B．most tourists want to visit the Georgia Aquarium
C．Science Center was set up by the local community
D．Atlanta museums mainly focus on art and literatur
“南海Ⅰ号”是指（）。
A.南宋早期木船
B.北宋晚期铁船
C.南宋马车
公债利率的高低不受下列哪一项影响（）。
A.金融市场利率水平
B.国家的信用状况
C.社会资金的供给量
D.发行的时间