People have experimented on animals in order to develop new drugs, improve the success rate of surgeries and so on.

Which of the following may be used to prevent heart disease?（ ） A: regular exercise B: life saving surgeries C: a healthy diet D: cholesterol-lowering drugs

3. Hermann Toplak suggested that more money should be spent on A: health insurance B: preventive programs C: state health services D: obesity related surgeries

Primary health care centre () is supposed to provide all services EXCEPT( ) A: Surgeries<br/>for acute emergency conditions B: Treatment<br/>of common aliments C: Health<br/>education D: Vaccination