预期理论暗含着这样一个假定：不同期限的债券不可互相替代。( )

把注意保持在同一活动上的时间是指( )

A．注意的广度

B．广义注意稳定性

C．狭义注意稳定性

D．注意的转移

语法填空。

     One afternoon,a little boy went into a drug store,reached for a soda carton (硬纸箱)and

pulled it over to the telephone.He stood 1.________the carton so that he could reach the

phone 2.________started to dial the phone numbers.

     The store owner observed and listened to the conversation:

     Boy:"Lady,can you give me the job of 3.________(cut)your lawn?"

     Woman (at the other end of the phone line):"I have already hired someone."

     Boy:"But I will do 4.________job for half the price."

     Woman:"That's great,but I'm very satisfied with my present employee."

     Boy:"Lady,5.________you give me the chance,I'll even sweep your sidewalk for free."

     Woman:"Oh,I'm sorry."

     Hearing this,the little boy replaced the phone 6.________(receive) with a smile on his

face.The store owner then walked over to the boy and said to 7.________,"I appreciate

your positive spirit and would like 8.________(offer) you a job."

     But the boy refused."I made the call not to apply for a job,but to check my performance

at the job I have already had.I am the one who 9.________(work)from 10:00 to 11:30 this

morning," the little boy explained 10.________the store owner.

红花桃仁汤功效与作用

下列属于发展能力分析指标的是( )。

A．速动比率
B．资本积累率
C．应收账款周转率
D．总资产报酬率