早期的期货市场对于供给方来讲，起到了( )的作用。A．稳定货源 B．锁住生产成本

—Would you help me with the report? It's too difficult to work with the data.   

—_____. [ ]

A. Never mind                  

B. With pleasure

C. That's right                    

D. Not at all

Those who continuously acquire new knowledge that they can ______ their work are more likely to succeed.

A．apply to

B．adapt to

C．contribute to

D．respond to

宫口开全后，开始保护会阴1的时机应是（）

A.胎头拨露后不久

B.胎头开始拨露时

C.经 * * 外口看到胎发时

D.胎头拨露阴唇后联合紧张时

E.胎头开始着冠时

朱自清散文的两大特色

儿童发育成熟意味着

A．身高体重达到成人水平
B．生长、发育基本结束，机体达到成人水平
C．骨骼、牙齿钙化基本完成
D．男孩出现遗精，女孩月经初潮发生
E．以上都不对