中央作出“对口支援青海省藏区”战略部署五年来，取得了令人瞩目的成就，为青海省藏区发展注人了强劲动力，也为东部地区发展寻求到更大发展空间。对民族地区的“对口支援”（    ）

①有利于区域协调发展，实现优势互补                ②说明合作可以互惠互利，共享成果

③体现了社会主义国家能够集中力量办大事         ④有利于促进民族团结和各民族共同繁荣

□○□○□＝□

语法填空

    ____ is well known, optimism(乐观)plays an important role in one's life. Although we are facing many difficulties, we should keep optimistic. Optimism is a mental(精神的)attitude or world view and it means expecting ____ best possible result from any given situation.

    I did ____ (poor) in English in the past, but I never gave up struggling(搏斗). All my families, teachers and friends encouraged ____ (I) and they taught me a lot of ____ (use) ways of learning English. I ____ (keep) practicing as they told me to do. I listened to English news and songs and I read interesting English stories. At weekends, watching some English movies was another good way to make my English better. ____difficulties I came across, I tried my best to work them out. I believe in myself, ____ (believe) that hard work would finally pay off. Gradually, I make progress in my English. Nowadays, I can remember English words ____ (easy) and use them freely when communicating with foreigners.

    Thanks to optimism, I have become one of the top English ____ (learn) in my school now.

小狗在小老鼠的____面。小老鼠在小狗的____面。