Which of following is NOT the factor affectting trade pattern（）
A. cultural affinity
B. geography
C. political factors
D. physics
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Nowadays members of WTO also pay more attention on service trade compared with before. Because_____（）
A. service trade has become more important than merchandise trade
B. the issues of service trade usually combined with investment,which is important for world economic growth
C. service trade is more competitive than other kinds of trade
D. advanced countries has stronger competency in commercial service trade
Refer to the following table, according to the principle of comparative advantage,Table: Output possibilities for South Korea and Japan Output per worker per dayCountry Tons of steel VCRsSouth Korea 8
A. South Korea should export steel
B. South Korea should export steel and VCRs
C. Japan should export steel
D. Japan should export steel and VCRs
After three （hour/hours）, the program tells them to stop （play/playing） and get some （exercise/exercises）（）
A. hours playing exercises
B. hour play exercise
C. hours playing exercise
D. hour playing exercise
Many （teenager/teenagers） cannot control the amount of （time/times） they spend （play/playing） online（）
A. teenagers time playing
B. teenager times playing
C. teenagers times play
D. teenager times playing
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