装有六氟化硫设备的配电装置室和六氟化硫气体实验室，必须装设对流式自然通风装置。

Something that has always interested me about Abraham Lincoln is，not surprisingly，his sense of humor. As far as I can tell，he's the first American President to have one．

That's because the term“sense of humor” really wasn't in common usage until the eighteen-sixties and seventies．In the eighteen-forties and fifties，it was called“the sense of the ridiculous," and didn't have the positive connotations（隐含意义）that“sense of humor" has today. Back then，what was ridiculous was what invited ridicule（讥笑）．Funniness and cruelty went hand in hand．Of course，they still do a lot of arm-in-arm walking in our day as well．

Lincoln’s humor was very different because，for one thing，it was actually "humor＂as what the word meant in his time. We don't make the distinction between "wit（风趣）”and "humor”anymore; but in the nineteenth century people did．Wit was unpleasant and offensive while humor was pleasant and sympathetic．It’s the difference we note now when we distinguish between "laughing with”and“laughing at．”Lincoln was much more about "laughing with”than "laughing at．”And when“laughing at，”it was often himself he was teasing.

In the famous Lincoln-Douglas debates，when Douglas accused Lincoln of being two-faced，Lincoln replied，referencing his plain looking，“Honestly，if I were two-faced，would I be showing you this one？”And，in a way，Lincoln's face itself tells us much about his sense of humor．

You can comb through thousands of photographs of politicians，soldiers，and the like from Lincoln's time and not find a single smile．

True, the long exposures（曝光）required for photographs of that time made smiling difficult．Yet Lincoln alone，as far as I can tell，overcame that difficulty.

Interestingly, while having a sense of humor，or at least the appearance of one provided by comedy writers has become a necessary characteristic for an American President in our time，in the nineteenth century，too much humor was considered problem.  And that was the case for Lincoln．A journalist covering the Lincoln-Douglas debates commented that“I could not take a real personal liking to the man，owing to an inborn weakness. . .that he was extremely, fond of jokes，anecdotes，and stories．”

小题1:We can infer from Paragraph 2 that＿＿

A．the American President could influence the use of English

B．the term "sense of humor”wasn't invented until the 1860s

C．what is funny to someone might be offensive to someone else

D．the concept of humor remains the same despite the passing of time小题2:The underlined words“this one”in Paragraph 4 refer to＿＿．

A．Lincoln's unattractive face

B．Lincoln's sense of humor

C．the debate they were having

D．cruelty that went with funniness小题3:We rarely see people from Lincoln's time wear smile in their photos because＿．

A．being humorous was considered inappropriate

B．they found it quite funny to smile before camera

C．not smiling for photographs was the fashion

D．photography technology then was not advanced小题4:What might the writer think of the journalist covering the Lincoln-Douglas debates？

A．His comment accurately reflected his time

B．He created a false picture of Lincoln

C．He was prejudiced and self-centered

D．He was brave to point out Lincoln's weakness

如图所示，用绳牵引小船靠岸，设水的阻力不变，在小船匀速靠岸的过程中，有(　 　)

A．绳子的拉力不断增大

B．绳子的拉力不变

C．船受的浮力减小

D．船受的浮力不变

地籍最初的作用是以( )为目的。

A．课税
B．征税
C．土地管理
D．土地登记

新生儿发病率最低的染色体疾病是

A．13-三体综合征

B．21-三体综合征

C．Klinefelter综合征

D．Turner综合征

E．18-三体综合征

不能引起特异性感染的是（）.

A．破伤风杆菌 

B．结核杆菌 

C．β－嗜血性链球菌 

D．真菌 

E．梭状芽胞杆菌