题目

下列不属于鸟类繁殖行为的是 A.筑巢          B.哺乳          C.求偶        D.育雏 答案：BThe reporter has written ________ articles about air pollution hoping to call the attention of all people to the problem. [     ]A．a series of  B．a great deal ofC．a plenty of  D．a large  amount of