due to lack of..... the proruption of heart diease safisty the demand of...... no use to do..... make a decision of..... to distinguish what are the true and what are the wrong ideas science information run a risk to do adventrue one's life to full of throb the source of Yangtze River due to lack of..... the proruption of heart diease safisty the demand of...... no use to do..... make a decision of..... to distinguish what are the true and what are the wrong ideas science information run a risk to do adventrue one's life to full of throb the source of Yangtze River