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
We can measure the effects of the interaction of whatever is inherited with ______.

单项选择题All the following advantages of advertising are mentioned in the first paragraph except that______.

单项选择题Most people believe that seeing shows in 3-D is not worth the trouble of having to wear a pair of glasses.

填空题paragraph 3 ______.

单项选择题At very low temperatures, superconductivity in a metal occurs where().

A. electrons do not move freely through the metal
B. electrons are crowded together
C. paired electrons move uninterruptedly
D. paired electron dance together to and fro

单项选择题51（）

A. for
B. from
C. to
D. of