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问题 单项选择题

下列有关神经传导的叙述中，正确的是（）

A.神经元受到刺激后会产生兴奋并通过树突传到其他细胞

B.兴奋产生后沿神经纤维单向传导

C.神经纤维未受刺激时，测得膜内外的电位是外负内正

D.当神经纤维的某一部位受到刺激而兴奋时，兴奋部位与未兴奋部位形成电位差

答案

参考答案：D

选择题

法国《1875年宪法》和1871年《德意志帝国宪法》使两国走上了代议制道路。下列关于两部宪法共同点的表述，正确的有

①国家元首有权任命内阁（政府）成员 ②内阁（政府）要对议会负责

③国家元首都有解散或部分解散议会的权力 ④议会完全行使立法权 [ ]

A．①②

B．②③

C．①③

D．②④

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单项选择题

Information is no good to you if you can’t （） it．The loction dimension of information means having access to information no matter where you are．Ideally, in other words，your location or the information’s location should not matter．You should be able toaccess information in a hotel room，at home，in the student center of your campus，at work，onthe spur of the moment while walking down the street，or even while traveling on an airplane．This location dimension is closely related to （）and wireless computing (and also ubiquitous computing)．

To keep certain information private and secure while providing remote access for employees，many businesses are creating intranets．An intranet is an （） organizational internet that is guarded against outside access by a special （） feature called a firewall (which can be software，hardware，or a combination of the two)．So，if your organization has an intranet and you want to access information on it while away from the office，all you need is Web access and the password that will allow you （） the firewall．

So，if your organization has an intranet and you want to access information on it while away from the office，all you need is Web access and the password that will allow you （） the firewall．

A．pass

B．through

C．across

D．cross
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