单项选择题

The underlined word" switching" in Paragraph 5 probably means ______.

A．losing
B．spending
C．changing
D．studying
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单项选择题
The main idea of the text is ______.
A．McDonald's is a pioneer in food products
B．McDonald's is enlarging its restaurants in the world
C．fried foods can't keep up with the development of moden society
D．McDonald's is to use new cooking oil
单项选择题
Which of the following is true according to the passage
A．If a person's cholesterol is high, it won't affect his health.
B．Heart disease is connected with the contents of cholesterol.
C．The Americans pay no attention to the action of McDonald's.
D．Most of American foods are lower in trans-fatty acids.
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