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语言的使用是社会经济政治文化生活的重要条件，是每人每天所离不了的。学习把语言用得正确，对于我们思想的精确程度和工作效率的提高，都有极重要的意义。最能准确复述这段话的是( )
地理老师画了世界五大洲的图形，并给每个图形编了代号，然后请五个同学上来每人认出两个洲。回答如下－－甲：3是欧洲，2是美洲；乙：4是亚洲，2是大洋洲；丙：1是亚洲，5是非洲；丁：4是非洲，3是大洋洲；戊：2是欧洲，5是美洲。地理老师说：“你们每人对了一半”。请你根据以上条件推测每个号码各代表哪个洲，下列正确的一项是( )。
毗边区：是指在领海以外而又与领海毗连，由沿海国对海关、财政、移民和卫生等特定事项行使管制权的一个海域。毗边区从测算领海宽度的基线起不得超过24海里。根据以上定义，下列陈述中属于毗边区的是( )
What is the sky(天空) Where is it How high is it What lies above the sky I am sure that you have asked these questions. They are very difficult to answer, aren’t theyIf someone asked you: "What color is the sky " I think that you would answer: "Blue". I am afraid that you would be wrong. The sky has no color. When we see blue, we are looking at blue sunlight. The sunlight is shining on little bits of dust in the air.Is the sky full of air I am sure that you have asked this question, too. We know that there is air all around the world. We could not breathe without air. Planes could not fly without air. They need air to lift their wings. Planes cannot fly very high because as they go higher, the air gets thinner. If we go far enough away from the earth, we find there is no air.Perhaps we can answer some of our questions now. What is the sky Nothing. Where is it It is all around the world. The sky is space. In this space there is nothing except the sun, the moon and all the stars! Everybody knows how high the sky is（）
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