2题非谓语选择题
问题描述：
2题非谓语选择题
1._____by a greater demand for vegetables,farmers have built more green houses.
A.Driven B.Being driven C.To drive D.Having driven
2._____to improving the quality of rice and wheat,the new technology developed by scientists is popular with farmers.
A.Applying B.Having applied C.To apply D.Applied
选什么,为什么
答
1.by a greater demand 出现于被动句中,故选择B
2.the new technolgy和apply是有被动关系（被应用在提高大米和小麦质量）,故选择D