A. teach children to be intelligent
B. whatever stimulation has been received from the environment
C. and because of the lack of communication with his classmates
D. a predictor of children’s future learning
E. taught to be more intelligent
F. language and psychological aspects of the parent-child relationship
Intelligence was once believed to be a fixed entity, valued as ______.

单项选择题The flow of an electric current in a regular conductor is made possible by the fact that()

A. electrons circle rapidly around the atom
B. the outermost electron move relatively freely around the atom
C. the innermost electrons stick to the atom
D. the outermost electrons are bound tightly to the inner ones

填空题Paragraph 2 ______.

单项选择题Sony and Panasonic will bring 3-D HDTV into the home in 2010.

单项选择题The river widens considerably as it begins to turn east.

单项选择题Two thirds of the sufferers of the disease were killed.