________ by the advances in technology, many farmers have set up wind farms on their land.

A．Being encouraged

B．Encouraging

C．Encouraged

D．Having encouraged

下列有关白蚁群体的叙述中，错误的是（　　）

A．白蚁群体包括雌蚁、雄蚁、工蚁和兵蚁

B．兵蚁的职能是保卫蚁穴

C．工蚁有生育能力

D．承担产卵任务的是雌蚁