【多选题】下列属于凯恩斯货币需求理论的观点是( )。
E.
最佳预防性货币余额的变化与货币支出分布的方差呈立方根关系
【单选题】The writer implies that____.
A.
difficult operation can be successfully performed all over the world now
B.
compared to the 'third revolution' in surgery,the first two are less important
C.
all patients can be cured by a gall bladder-removal operation
D.
a new breakthrough has been made in surgery
【简答题】The writer implies that eyelids are .
【单选题】The writer implies that it's not advisable to look for love in cyberspace.
【简答题】The passage implies that the writer and her boyfriend live in
【单选题】The writer implies that one disadvantage of town shops is that ______.
A.
their prices are higher
B.
people cannot telephone them
C.
their staff may take less trouble to satisfy customers
D.
one has to queue up to pay in them
【单选题】In Paragraph 4 the writer implies that fertile soils are______.
【单选题】交易成本,是指在协商、谈判和履行协议等交易性活动中,为达成合作所需要支付的只要存在交易活动就存在交易成本,它已经成为人类社会中不可分割的组成部分。 各种资源的总和。分割的组成部分。 下列选项不属于交易成本的是:( )。