单项选择题

What did Group A do in their program

A．They stepped up and down on a bench every day.
B．The didn't do any exercise.
C．They rode on an exercycle every day.
D．They pushed handle bars every day.

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热门试题

单项选择题The family in the western world

A．has changed a lot during the last two centuries
B．hasn't changed at all during the last two centuries
C．has changed a little during the last two centuries
D．has become bigger and bigger

单项选择题During the 1800s ______.

A．marriage involved two families
B．parents arranged marriages
C．marriage joined two people
D．parents chose husbands for their daughters

单项选择题Before the nineteenth century ______.

A．people got married because they loved each other
B．people could choose whom they wanted to marry
C．people married very young
D．families usually arranged marriages

单项选择题Social scientists do NOT study ______.

A．marriage in different countries
B．the differences between life in rural and urban areas
C．how a satellite is launched
D．family life

单项选择题Today family in the United States ______.

A．isn't changing at all
B．is changing even faster
C．is changing a little
D．is still very large