单项选择题

The main idea of the passage is_______.

A．the two most popular aerobic exercises are jogging and swimming
B．jogging is better than swimming
C．swimming is more popular than jogging
D．swimming is recommended over jogging

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单项选择题

The unstated main idea of the passage is _______

A．Kentucky Fried Chicken's plan for Brazil failed
B．If companies don't understand other cultures, they won't succeed there
C．Most Brazilians prefer charcoal-broiled chicken to fried chicken
D．In Hong Kong, a certain bright blue is associated with death

单项选择题

Investors in gambling ventures have found them _______

A．very difficult to handle
B．extremely profitable
C．to cause family problems
D．boring