举办新闻发布会的“由头”及时机有( )
A.确定新闻价值
B.确定最佳时机
C.确定公众
D.确定联系范围
E.确定经销商
参考答案:A,B
若x>0、y>0,则x+y>1是x2+y2>1的( )
A.充分非必要条件
B.必要非充分条件
C.充要条件
D.非充分非必要条件
Their talks failed to reach any agreement and ______ now seems little hope of a settlement.
A.it
B.that
C.there
D.what