4．The nation's two biggest school systems-New York City and Los Angeles received threats Tuesday of a large-scale attack with guns and bombs．LA reacted by shutting down the entire district，while New York dismissed the warning as an amateurish trick and held classes．
It's extremely rare for a major U．S．city to close all its schools because of a threat and it reflected the unease hanging about in Southern California following the terrorist attack that killed 14people at a holiday lunch two weeks ago in San Bernardino．
In LA，the threat came in the form of an email to a school board member．Authorities in New York reported receiving the same type of email and decided there was no danger to schoolchildren．Mayor Bill de Blasio concluded the threat contained"nothing believable．"It was so unconventional，"he said．
New York Police Commissioner William Bratton agreed and said that it looked like the sender of the threat had watched a lot of the Showtime terrorism drama Homeland．Bratton indicated that the type of threats in the email mirrored some recent scenes of the show．
The shutdown closed all its schools across Los Angeles．Officials announced Tuesday evening that schools would reopen Wednesday．
Officials in LA defended the move to shut schools，with that city's police chief dismissing the criticism as"irresponsible．"
"We have suffered too many school shootings in America to ignore these kinds of threats，"Chief Charlie Beck said at a news conference．Jordan Tama，an assistant professor at American University specializing in U．S．counterterrorism（反恐怖主义）policy，said it's not unreasonable for authorities in different places to make different decisions based on the same information．
28．What did New York City think of the email threats？A
A．Tricky．B．Professional．C．Conventional．D．Serious．
29．Why did LA shut all its schools at the threats？C
A．LA respected school education more．
B．Officials in LA were irresponsible．
C．The terrorist attack in San Bernardino left LA still uneasy．
D．The school teachers watched too much of the terrorism drama．
30．Why did New York authorities make a different decision？B
A．They hadn't received the same threat before．
B．They thought the threat so unconventional and unbelievable．
C．New York had witnessed too many school shootings．
D．They thought it rare to close all its schools for a threat．
31．What would be the best title of this passage？D
A．Terrorism attacks break out in LA & NY
B．Email threats are copies of a terrorism drama
C．NY and LA authorities make different decisions
D．NY，LA schools receive threats； LA cancels classes．
分析 本文属于记叙文阅读，作者通过这篇文章向我们讲述了纽约以及洛杉矶的学校收到了电子邮件威胁，洛杉矶的所有学校被关闭，以及政府官员对这件事的看法．
解答 28．A 推理判断题，根据第三段Mayor Bill de Blasio concluded the threat contained"nothing believable．"It was so unconventional，"he said．可知市长认为这些邮件不可信，因此可以推断电子邮件威胁是狡猾的，故选A．
29．C 细节理解题，根据第二段It's extremely rare for a major U．S．city to close all its schools because of a threat and it reflected the unease hanging about in Southern California following the terrorist attack that killed 14people at a holiday lunch two weeks ago in San Bernardino．可知洛杉矶关闭了所有的学校是因为两周前在圣贝纳迪诺发生了恐怖袭击，有十四人死亡，故选C．
30．B 细节理解题，根据第三段Authorities in New York reported receiving the same type of email and decided there was no danger to schoolchildren．Mayor Bill de Blasio concluded the threat contained"nothing believable．"It was so unconventional，"he said．可知纽约当局做出不同的决定是因为他们认为这样的威胁是如此的非常规和令人难以置信，故选B．
31．D 主旨大意题，通读全文可知本文主要向我们讲述了纽约，洛杉矶的学校收到了威胁，他们关闭了学校同时取消上课，故选D．
点评 考查学生的细节理解和推理判断能力．做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确选择．在做推理判断题时不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．
