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Unit 5 Travelling abroad Ⅰ. 语法填空 阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。 Good evening，ladies and gentlemen. We always say “we are the future”．Indeed.We，the younger generation，represent modern knowledge，new concepts，ambition and great desire __1__ success.But，have you ever thought of this question：how can we be successful in the 21st century，__2__ is full of great challenges and fierce competitions？In my opinion，there are __3__ important factors. Firstly，we have to catch the opportunities and face the challenges.China has __4__(successful)entered the World Trade Organization，Beijing __5__(host)the 2008 Olympic Games successfully... If we want to be successful，we have to seize these opportunities.SARS and AIDS，environmental pollution，growing population...We have no choice but __6__(solve)these problems with our own hands.Thus，catching the opportunities and trying our best to cope with the difficulties __7__(be)necessary for us to succeed in the 21st century. __8__，we have to learn to cooperate and compete.For example，when SARS __9__(spread)rapidly in China，scientists all over the world cooperated with each other and prevented the disease from spreading in a short period of time.At the same time，they were also competing against each other to see who could conquer the disease first.By cooperating | 
