单项选择题

The author of the passage thinks that ______.

A．the Framingham study is of doubtful validity
B．the "Ideal Weights" tables may not be very accurate
C．most people should lose weight
D．most people should put on weight

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热门试题

单项选择题

According to this passage, farming is difficult in New England because ______.

A．the winter is very long there
B．the farms are very old
C．the soil is rocky and thin
D．there is not enough machinery for farming

单项选择题

This passage says that the work of removing stones ______.

A．must be done again and again
B．is usually done during the winter
C．is an interesting job children enjoy doing
D．was more difficult before machines were used