造成原始社会“只知其母，不知其父”状况的原因是[ ]
A．群婚
B．固定婚姻
C．对偶婚
D．走婚
答案：A
There __________ a sports meeting in our school next week.
A．won't have
B．isn't going to
C．won't be
D．isn't going to have
塑造企业形象的重要意义是什么？
