定居国外的中国公民回国后出境，凭有效的中华人民共和国护照、旅行证或其他有效出境证件，无需办理签证。 ()
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旅游团导游服务集体的任务是为团队旅游者提供导游讲解服务。 ()
A. 正确
B. 错误
A．reactionB．cooperationC．interactionD．relation
A. reaction
B. cooperation
C. interaction
D. relation
What is Michael planning to do on Sunday afternoon？
A. Go out with some friends.
B. Show his sister and brother-in-law around.
C. Sleep all afternoon.
D. Go to a football game.
According to the talk, what will man probably be able to do by the year 2050？
A. Establish a large number of projects in Space Shuttle Columbia.
Build permanent colonies in space.
Construct many energy stations on the islands in the sea.
D. Build filling stations in space to provide fuel for cars on earth.
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