单项选择题

The investigation done in the IHD programs ______.

A．focused on children from poor families
B．was less convincing than Ramey's research
C．confirmed the findings made in Ramey's research
D．focused on the intelligence growth of children with low IQs

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单项选择题

According to the passage, as employment became a dominant form of work, ______.

A．women were left to work at homes
B．old people tend to live a more active life
C．women enjoy more working opportunities
D．men and women begin to share the household work

单项选择题

The enclosures of the 17th and 18th centuries meant that people were ______.

A．no longer legally entitled to their own land
B．badly paid for the work they managed to find
C．not adequately compensated for the loss of their land
D．forced to look elsewhere for means for supporting themselves