单项选择题

A" myograph" (Para. 2, Line 1) is an electronic instrument that______.

A．is able to design new tools
B．measure the amount of energy used
C．enables people to see the muscular movements
D．visualizes electrical signals
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单项选择题
What problems would broken families bring to both children and parents
A．Children grow up feeling unsettled and parents don't pay much attention to children.
B．Children grow up feeling free and one parent is responsible for raising children.
C．Children are moved back and forth between parents and the single parent is busy working to make money to support himself / herself.
D．Children grow up feeling unsettled, and the parents have little time for his/her own interests because one parent is too busy taking care of children.
单项选择题
According to the author, the situations of American families in the future may______.
A．become worse
B．remain the same
C．get better
D．keep unchanged
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