e_Internet._Each_class_sent_its_own_representative_to_attend_it.

　　The_affirmatives_thought_that_the_students_can_increase_their_knowledge_by_searching_for_information_broadly._The_negatives_contradicted_the_statement._They_thought_that_restrictions_should_be_placed_on_the_use_of_the_Internet,_because_most_students_have_a_preference_for_chatting_and_playing_games_on_the_Internet,_which_is_contradictory_to_the_idea_of_the_parents_and_the_teachers.

　　二、勤练高考题型，多练自能生巧

　　Ⅰ.完形填空

　　With time flying, people become aged. Then many people even in their middle age often start to notice that their memory and mental clarity are not what they used to be. We suddenly can't remember __1__ we put the keys just a moment ago, or an old friend's name, or the name of an old band we used to love. As the brain __2__， we refer to these occurrences as "senior moments". __3__ seemingly innocent, this loss of mental focus can potentially have a(n) __4__ effect on our social and __5__ well­being.

　　Neuroscientists, experts who study the nervous system, are increasingly showing that there's actually a lot that can be done. It __6__ out that the brain needs exercise in much the same way our muscles do, and the right mental __7__ can significantly improve our basic cognitive (认知的) __8__. Thinking is basically a __9__ of making connections in the brain. To a certain extent, our ability to __10__ in making connections that drive intelligence is inherited (继承的). __11__， because these connections are made through effort and practice, scientists believe that intelligence can expand and wave __12__ mental effort.

　　Now, a new web­based company has taken a step __13__ and developed the first "brain training program" designed to actually help people improve and __14__ their mental sharpness.

　　The web­based program __15__ you to systematically improve your memory and attention skills. The program keeps a(n) __16__ of your progress and provides detailed feedback (反馈意见) about your performance and __17__. Most importantly, it __18__ changes and improves the games you play to __19__ the strength you are developing - much like a(n) __20__ exercise routine which requires you to increase resistance and vary your muscle use.

　　1．A.where　　　　　　 　B．when

　　C．that D．why

解析：选A　联系空后的"we put the keys just a moment ago"可知，此处指记不清刚刚把钥匙放在哪里(where)了。