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【简答题】
Passage Three Questions 31 to 35 are based on the following passage. Since the beginning of the Internet era,it has been widely accepted that when you join an online company,whatever data you put into it belongs to you. That means you can sign up for one kind of email,import your contacts into that system,and if you later decide to switch to some other email service,you can export all your contacts from the first service into the new one.You can use Microsoft’s Hotmail,then move to Yahoo Mail,then to Google’s Gmail.Or you can have accounts on three services and keep all your contacts in each one. That’ the way things were — until Facebook appeared. Facebook took a different approach Until recently, everything you put into Facebook could not be exported anywhere. In effect, you didn’t own your data. Facebook did. Of course this is rubbish.The reality is that Facebook wants to make it difficult,if not impossible,for you to leave. Now that policy has sparked a fight between Google and Facebook.Google is angry because its users can,and often do,export their Gmail contact information into Facebook.But those people can’t bring Facebook information back into Gmail. Earlier this month Google declared it would block exports of its data to Facebook.In a shameless move,Facebook broke through Google’s roadblock so its users could keep pulling data from Google. Google said it was “disappointed’’ with Facebook’s behavior.It also created a warning screen to tell Gmail users that if they export their information to Facebook they won’t get it back. Basically,Facebook’s position with major IT companies is this:if you want access to all the information we’ve collected,strike a deal with us.Microsoft and Yahoo have done that,and now,like magic,they can export Facebook contact information into their systems,while Google still can’t. Remember the early days of the Net,when everything was going to be open and flee? That was great until people realized that their user data could be turned into gold.Now there are billions involved,and nobody is playing nice anymore. 31.Before Facebook appeared,people_______. A.had a limited number of accounts B.enjoyed a completely free service C.had limited access to their contacts D.enjoyed full ownership of their data Google is angry with Facebook due to the latter’s refusal to_______.A.let its users use Gmail B.offer technical support C.share user information D.protect user information The passage indicates that Microsoft and Yahoo have_______.A.agreed to side with Google B.accepted Facebook’s terms C.taken their own approaches D.struck a deal with each other According to the writer, the current state of the Net is_______.A.misleading B.frustrating C.promising D.satisfying It seems that Facebook’s approach makes the writer rather_______.A.annoyed B.assured C.puzzled D.pleased
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【判断题】同时具有免疫原性和反应原性的物质称完全抗原。
A.
正确
B.
错误
【单选题】SLE时补体的变化是
A.
正常
B.
降低不明显
C.
显著升高
D.
显著降低
E.
升高不明显
【简答题】两个完全相同的单个线圈共用一个活动的衔铁就构成了( )电感传感器
【单选题】有人将人类历史上的战争划分为“冷兵器战争”、“热兵器战争”、“机械化战争”和“信息化战争”等不同阶段。这种划分的依据是 。
A.
战争 时间
B.
战争 所处时代
C.
经济发展水平
D.
使用的武器
【单选题】下列 关于抗原的描述中错误的是
A.
同时具有免疫原性和免疫反应性的抗原称为完全抗原
B.
半抗原只具有免疫原性或免疫反应性其中一个特性
C.
共同抗原是交叉反应发生的物质基础
D.
表位是决定抗原免疫原性和免疫反应性的物质基础
E.
半抗原在一定条件下可转化为完全抗原
【简答题】两个完全相同的单个线圈的电感传感器共用一根活动衔铁就构成了( )。A. 差动式电感传感器
【单选题】我国南方和北方耕作制度有明显差异,主要是因为
A.
土地条件的显著差异
B.
气候条件的显著差异
C.
种植习惯的显著差异
D.
技术条件的显著差异
【简答题】同时具有免疫原性和免疫反应性的抗原称为 ______ ;半抗原只具有______
【判断题】大失血引起的急性肾衰竭属于肾后性因素。
A.
正确
B.
错误
【单选题】令s表示离职率,f表示就业率。如果劳动力市场处于稳定状态,自然失业率等于:
A.
1/s
B.
1/(s+f)
C.
s/(s+f)
D.
f/(s+f)
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