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搜题
【单选题】
It was when I was attending high school that I first read Asimov' s stories. At the time, a few SF magazines began to introduce this author and translate a few pieces from his 'Robot Series'. Of Asimov' s works, the one that left the deepest impression on me was Pebble in the Sky. This novel directly influenced my early SF writing. Asimov was one of the leading writers of Western science fiction's Golden Age, so although his writing may not have a direct influence on writers of today, his underlying (潜在的) influence on many levels is undeniable — the famous Three Laws of Robotics, and many classic writing techniques, for example. Of course, his influence is related to the atmosphere that existed in the Golden Age a science fiction writer today has a hard time reaching that level no matter how outstanding he or she is. Asimov's novels are marked by a fully integrated logical system, and his stories are a pleasure to read — this is the reason his novels still attract readers today. Naturally, Western science fiction has few people these days who follow Asimov' s creative methods instead they are closely connected to mainstream artistic trends, employing large amounts of postmodern techniques. This type of science fiction has a hard time blossoming on Chinese soil. The majority of Chinese SF readers would rather read the classic works of Asimov. This is an important question that faces today' s Chinese science fiction writers. Compared with the 'Robot Series', Asimov's 'Foundation Series' is a little less well-known in China. This is mostly due to the large influence of the Three Laws, and moreover, the Founda-tion novels have never been completely introduced here. In fact, the Foundation series creates an entire world, even grander than that of the 'Robot Series' this science fiction epic(史诗) had a direct influence on later Western science fiction, the most famous example being Star Wars. We can know from the passage that the author is a______.
A.
science fiction writer
B.
science fiction publisher
C.
high school student
D.
novel translator
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【多选题】消化道平滑肌的一般生理特性包括
A.
兴奋性高
B.
具有一定的紧张性
C.
具有一定的自律性
D.
具有较大的伸展性
E.
对化学性刺激敏感
【多选题】以下关于细胞因子的叙述,哪些是正确的
A.
是一组低分子量的蛋白质
B.
可以单体、二聚体、三聚体存在
C.
既可以作用于自身细胞,也可作用于其它细胞
D.
需其他物质刺激才能产生
E.
不同的细胞可产生一种细胞因子
【判断题】纯净的水PH=7,则可以说PH值为7的溶液就是纯净的水( )
A.
正确
B.
错误
【单选题】下述哪些细胞因子能引起粒细胞集落形成
A.
Multi-CSF
B.
GM-CSF
C.
G-CSF
D.
以上都是
E.
以上都不是
【多选题】与精子发生有关的激素
A.
睾酮
B.
雌激素
C.
卵泡刺激素
D.
黄体生成素
E.
生长激素
【多选题】以下哪些分子是细胞因子
A.
干扰素
B.
白介素
C.
肿瘤坏死因子
D.
趋化因子
【多选题】以下关于细胞因子的叙述,哪些是正确的?
A.
是一组低分子量的蛋白质
B.
需其他物质刺激才能产生
C.
可以单体、二聚体、三聚体存在
D.
既可以作用于自身细胞,也可作用于其它细胞
E.
不同的细胞可产生一种细胞因子
【多选题】消化道平滑肌的一般生理特性包括
A.
兴奋性较低,收缩缓慢
B.
对化学、温度及机械牵张刺激敏感
C.
经常保持一定的紧张性收缩
D.
富有伸展性
E.
受中枢神经系统的控制,可随意运动
【多选题】消化道平滑肌的一般生理特性包括?
A.
自动节律性
B.
电兴奋性较高,收缩缓慢
C.
富有伸展性
D.
保持一定的紧张性
E.
对化学、温度和机械刺激不敏感
【单选题】一个进程被唤醒意味着
A.
该进程重新占有了 CPU
B.
进程状态变为就绪
C.
它的优先权变为最大
D.
PCB移至就绪队列的队首
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