1．There are at least three reasons why so many children have_dropped_out_of_school (辍学) since last year.

　　2．She took good care of the public property and set_a_good_example_to_(树立榜样) all of us.

　　3．But_for_the_rain (要不是下雨), we should have had a pleasant journey.

　　4．I don't think his remarks are_relevant_to (与......相关) our discussion.

　　5．The government gave a command that troops (should)_be_sent_to__the_islands (应该被派往这些岛屿) to restore order.

　　6．It's_widely_acknowledged_that (大家普遍认为) we can never expect a bluer sky unless we create a less polluted world.

　　[话题语篇高考练]

　　Ⅳ.阅读理解

　　A

　　Singapore is planning to cut off web access for public servants as a defense against potential cyber attack - a move closely watched by critics who say it marks a retreat (倒退) for a technologically advanced city­state that has trademarked the term "smart nation"．

　　Some security experts say the policy, due to be in place by May, risks damaging productivity among civil servants and those working at more than four dozen statutory (法定的) boards, and cutting them off from the people they serve. It may only raise slightly the defensive walls against cyber attack, they say.

　　Ben Desjardins, director of security solutions at network security firm Radware, called it "one of the more extreme measures I can recall by a large public organization to fight cyber security risks". Stephen Dane, a Hong Kong­based managing director at networking company Cisco Systems, said it was "a most unusual situation" and Ramki Thurimella, chair of the computer science department at the University of Denver, called it both "unprecedented (前所未有的)" and "a little excessive (过分的)". One 23­year­old manager, who gave only her family name, Netagale, said blocking web access would only harm productivity and may not stop attacks. "Information may leak through other means, so blocking the Internet may not stop the unavoidable from happening，" she said.

　　But other cyber security companies said that with the kind of threats governments face today, Singapore had little choice but to restrict Internet access.

　　FireEye, a cyber security company, found that organizations in south­east Asia were 80% more likely than the global average to be hit by an advanced cyber attack.

Singapore officials said no particular attack led to the decision but noted a leakage of one ministry in 2015. David Koh, CEO of the newly formed Cyber Security Agency, said