单项选择题

Which of the following is NOT true of chronic diseases in the U. S.

A．They account for 70% of all deaths.
B．They are responsible for most of the health care costs.
C．They often result in unhealthy lifestyles.
D．They are largely preventable.

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热门试题

单项选择题

What the author discussed in the previous section is most probably about _____.

A．classification of reasoning
B．some special types of reasoning
C．relationships between causes and results
D．some other common types of reasoning

单项选择题

This passage mainly discusses _____.

A．causal reasoning
B．various types of reasoning
C．classification of cause
D．the causal process