A．ageB．yearC．timeD．generation
A. age
B. year
C. time
D. generation
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Even the most sophisticated Japanese robots are_________
A. too much energy
B. based Ol3 American designs
C. they are too costly
D. they are not reliable
E. good to quality control
F. free of charge
The researchers studied the mice.
请选择（15）处的最佳答案。
A. programs
B. parent
C. records
D. words
Blair hopes that the G8 countries will work together to reduce carbon emissions.（）
A. Right
B. Wrong
C. Not mentioned
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