强化是对学生的正确行为进行表扬，以使其发扬光大。 ()
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A．Noise-control technology.B．Noise in factories.C．Noise-control regulations.D．Noise-re
A. Noise-control technology.
B. Noise in factories.
C. Noise-control regulations.
D. Noise-related effects.
"On paper these kids should not be succeeding, but they are" implies ______.
A. reducing class sizes has more positive effects than negative ones
B. reducing class sizes does achieve satisfactory effects on disadvantageous students
C. smaller class prevent the children from failing in tests
D. smaller class works best for students with lacklustre performance
A．Have a good sleep at home.B．Take up a certain form. of entertainment.C．Listen to the
A. Have a good sleep at home.
B. Take up a certain form. of entertainment.
C. Listen to the sounds of goats or cows in the country.
D. Appreciate the beauty of nature.
公民行为能力与自然人的年龄有关。 ()
A. 正确
B. 错误
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