A．A stricter legislation on medicine．
B．A higher awareness of general public．
C．A comprehensive reform of medical system．
D．A tight control of medicine．

A．Martin will have completed his swimming．
B．Martin will swim back home．
C．Martin will celebrate with his family．
D．Martin will swim to the city of Belem．

A．The Yangtze．
B．The Nile．
C．The Mississippi．
D．The Amazon．