Questions 11 to 18 are based on the conversation you have just heard.

A．He was remembered because he was once a brave soldier.
B．He was remembered because he took many war photographs.
C．He was remembered because he painted great portraits.
D．He was remembered because he designed a portable camera.

A．Many sources of surface water have been found.
B．Chemicals were found in the water.
C．A growing population need more clean water in that place.
D．A bomb factory will be built there.