1. Japan's refusal to release£¨ÊÍ·Å£© Chinese fishing boat captain had "already caused serious damage to Sino-Japanese bilateral contacts£¨Ë«±ß¹Øϵ£©".
A.a; ²»Ìî B. a; a C.the; ²»Ìî D. the; the
2. Food safety is important, so preventing food pollution is of great .
A.considerably, necessary B.reasonably, necessary
C.considerably, necessity D.naturally, necessity