单项选择题

"To do this" ( in Paragraph 3 ) means ______.

A．to help patients recover
B．to increase the number of heart surgeries
C．to get back the money spent on the equipment
D．to buy new equipment for the treatment of heart disease

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单项选择题

The author would agree that ______.

A．more money should be spent on the prevention of heart disease
B．heart surgery has helped most patients improve their conditions
C．modern technology has made heart surgery more risky than before
D．the public have known a great deal about the causes of heart disease

单项选择题

What would be the best title for the passage ______.

A．The Greatest Killer in the West
B．Heart Disease: Treat or Prevent
C．Modern Technology and Heart Surgery
D．Heart Surgery: Advantage and Disadvantages