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【单选题】

Culture shock might be called an occupational disease of people who have been suddenly transplanted abroad. Like most ailments, it has its own (1)_____ and cure. Culture shock is (2)_____ by the anxiety that results from losing all our familiar signs and symbols of social intercourse. Those signs or cues include the thousand and one (3)_____ in which we orient ourselves to the (4)_____ of daily life: when to shake hands and what to say when we meet people, when and how to give tips, how to (5)_____ purchases, when to accept and when to refuse invitations, when to take statement seriously and when not. These cues, (6)_____ may be words, gestures, facial (7)_____ customs, or norms, are (8)_____ by all of us in the course of growing up and are as much a (9)_____ of our culture as the language we speak or the beliefs we accept. All of us (10)_____ for our peace of mind and our efficiency on hundreds of these cues, (11)_____ of which we do not carry on the (12)_____ of conscious awareness. Now when an individual (13)_____ a strange culture, all or most of these familiar cues are removed. He or she is like a fish out of water. No matter how broad-minded or (14)_____ of goodwill you may be, a series of props have been (15)_____ under you, followed by a feeling of frustration and (16)_____. People react to the frustration in much the (17)_____ way. First they reject the environment which causes the (18)_____. "The ways of the host country are bad because they make us feel bad." When foreigners in a strange land get together to (19)_____ about the host country and its people, you can be sure they are (20)_____ from culture shock.

A.
expression
B.
feature
C.
muscle
D.
characteristic
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【单选题】2012年12月26日,全长2298公里的京广高铁贯通运营,这条世界最长的高速铁路建成通车,成为中国高铁建设的一个新标志。2012年除了高铁技术取得重大成就外,下列哪一项成就不是2012年我国科技方面取得的成就______

A.
千万亿次超级计算机“天河一号”通过验收
B.
天宫一号与神舟九号首次载人交会对接任务圆满完成,我国全面掌握空间交会对接技术
C.
“蛟龙”号完成7000米深潜试验,我国首艘航母“辽宁舰”交付入列
D.
北斗区域卫星导航系统组网发射任务完成

【单选题】鲸鱼与鱼之间的相似性是趋同性的一个例子,趋同性就是不同种类的生物为适应同一环境而独自发育形成一个或多个相似的外部身体特征的过程。鲸鱼是哺乳动物,因此它与鱼不属于同一纲的生物。然而,鲸鱼通过把它们的外部身体特征与那些鱼类的趋于一致来适应海洋环境。 如果上面的陈述是正确的,则下面哪一项是基于上述陈述的合理推论______

A.
栖居于同一环境的单一类生物体的成员的所有外部身体特征一定完全相同
B.
某一单类的生物体成员一定具有一个或多个使它们与其他种类的生物体相区分的外部身体特征
C.
一种生物发育成与其他种类的生物相似的外部身体特征完全是它们适应相似环境的结果
D.
不能仅仅因为某一生物具有一个或多个与某类生物体的成员相似的身体外部特征,就把该生物与它们归为一类