小儿开始认识母亲,见奶瓶表示喜悦的年龄是()
A.2个月
B.3个月
C.4~5个月
D.6~7个月
E.1~1岁半
参考答案:C
–Have you received Jack’s plan?
--Yes, but I don’t think his plan is _____.
A.worth being considered
B.worthy to be considered
C.worthy of considering
D.worth to be considered
《邮政法》规定邮政企业履行()的义务。
A.服务民众
B.普遍服务
C.有偿服务
D.无偿服务