单项选择题

We learn from the passage that olestra is a substance that______ .

A．contains plenty of nutrients
B．renders foods calorie-free while retaining their vitamins
C．makes foods easily digestible'
D．makes foods fat-free while keeping them delicious

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单项选择题

Which of the following statements is TRUE according to the passage

A．Football teams play only once a Week, because football players need time to recover from each match.
B．The 1997 world series of baseball were reviled in news media because the games are played in closed fields.
C．Most of the players in baseball game played in Miami came from South America.
D．Hocky was an American invention which has gained the popularity in the world.

单项选择题

The result of the search for an easily digestible fat turned out to be______.

A．commercially useless
B．just as anticipated
C．somewhat controversial
D．quite unexpected