单选
Deep inside a mountain near Sweetwater in East Tennessee is a bady?of water know
A The Cherokee Indians. B Tourists. C Ben Sands. D Scientists.
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单选
Deep inside a mountain near Sweetwater in East Tennessee is a bady?of water know
A A small natural opening. B A large cave. C Another series of rooms. D Many old Indian objects.
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单选
Deep inside a mountain near Sweetwater in East Tennessee is a bady?of water know
A an underground testing site B an Indian meeting ground C a tourist attraction D a motor boat race course
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单选
Space is a dangerous place,not only because of meteors but also because of rays
A it protects him against the harmful rays from space B it provides sufficient light for plant growth C it supplies the heat necessary for human survival D it screens off the falling meteors
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单选
Space is a dangerous place,not only because of meteors but also because of rays
A exposure to even tiny amounts of radiation is fatal B the effect of exposure to radiation is slow in coming C radiation is avoidable in space exploration D astronauts in spacesuits needn't worry about radiation damage
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单选
Space is a dangerous place,not only because of meteors but also because of rays
A the Apollo mission was very successful B protection from space radiation is no easy job C astronauts will have deformed children or grandchildren D radiation is not a threat to well-protected space explorers
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单选
Space is a dangerous place,not only because of meteors but also because of rays
A The Atmosphere and Our Environment B Research on Radiation C Effects of Space Radiation D Importance of Protection Against Radiation
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单选
Mrs.Peters stopped playing the piano when she began to work.She had lived in a v
A her parents gave her all the money for it B she saved enough money for it C her husband gave her the money D she saved some money and her relatives gave her the rest
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单选
Mrs.Peters stopped playing the piano when she began to work.She had lived in a v
A a man was coming to repair her piano B Mrs.Peters received a telephone call from the shop C the piano was sent to her house at 10 o'clock D Mrs.Peters was going to clean the house
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单选
Mrs.Peters stopped playing the piano when she began to work.She had lived in a v
A hating dirt B cleaning everything C waiting for the man D feeling ashamed of the dirty and untidy house
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