题干
261. The players of China won 150 gold medals in Pusan Asain Games of 2002. Our players _____ to be very great.
A：are proved
B：did prove
C：were proved
D：was proved
答案(点此获取答案解析）
B
这4种微粒结构示意图，判断下列说法中正确的是（ ）