【单选题】
实施乡村振兴战略，要以（）为重点，激活主体、激活要素、激活市场。
①
A.提高农民收入
②
B.加大财政投入
③
C.提高农民教育文化水平
④
D.完善产权制度和要素市场化配置
【单选题】
When their party came back to the camp site, ours arrrived two hours earlier. Identify the mistake in the sentence.
①
When
②
ours
③
arrived
④
earlier