What is the author's attitude towards the phenomenon of teenagers' drinking

A．dogmatic
B．persuasive
C．impersonal
D．ironic

A．The United States will be isolated if it does not stop pursuing super affluence.
B．The poor countries will no longer supply the United States with their goods.
C．The United States should care about the well-being of other countries.
D．It is time for the Americans to help the people in poor countries to improve their living standard.