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【单选题】
下列属于环境物理效应的现象是( )。A.
湖泊酸化
B.
洛杉矶烟雾
C.
伦敦烟雾
D.
热岛效应
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【简答题】先秦说理散文经历了一个由萌芽到成熟的过程。_____创立了语录体;《孟子》也是语录体,但已是对话式论辩文;《庄子》文章则显示出由语录体向专论体过渡的迹象;而_____、_____中的专题论文,论点明确,长篇大论,标志着我国古代说理文体制的完全成熟。
【简答题】先秦说理散文经历了一个由萌芽到成熟的过程。语录体的代表作品是 _____。
【简答题】先秦说理散文经历了一个由萌芽到成熟的过程。 _____创立了语录体。
【单选题】201712T28 _______the library for hours without finding anything useful, I turned to my professor for help.
A.
Having searched
B.
To search
C.
Have searched
D.
Searching
【简答题】28. _____ the library for hours without finding anything useful, I turned to my
professor for help.A. To search B. Having searched C. Have searched D. Searching
【单选题】CENTOS7系统中启动网络服务 的命令是 ( )
A.
. s巴，rvre n etw ork S的rt
B.
/etc/:init.d/n etv ork 期rt
C.
. SjS棚 ctls也rtn etv ork.S9rv ice
D.
./etc/in it d/rc.d/il itd s的rt
【单选题】the library for hours without finding anything useful, I turned to my professor for help.
A.
To search
B.
Having searched
C.
Have searched
D.
Searching
【单选题】____________ the library for hours without finding anything useful, I turned to my professor for help. (2017年12月A级28题)
A.
to search
B.
having searched
C.
have searched
D.
searching
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