读地球公转示意图，回答下列问题。
（1）从春分日到夏至日，地球运行在公转轨道①②③④中的________段，该时段北极圈内极昼的范围将逐渐________。
（2）在地球公转轨道①②③④四个时段中，太阳直射点向北移动的有________。
（3）当地球运行到A位置时，太阳直射点的纬度是________，此时北半球正午太阳高度达最大值的范围是________________。在ABCD四个位置中全球昼夜平分的有________。
（4）地球公转一周360°所需时间称为一个________年。地球公转到A位置与B位置时，线速度较快的是位置________。
（1） ④，扩大
（2） ①、④
（3）北回归线或23°26′N , 北回归线及其以北地区(各纬度) 。BD
（4） 恒星 B
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| In 1989 an 8.2 earthquake almost flattened Los Angeles, killing over 30,000 people in less than four minutes. A father rushed to where his son was 1 to be, only to discover that the building was flattened. But he remembered the 2 he had made his son: "I'll always be there for you!" Tears began to fill his eyes. Although it looked 3 , he remembered his words. 4 his son's classroom would be in the back right corner of the building, he rushed there and started 5 . Other parents tried to pull him off what was left of the school, saying " It's too late! They're all dead! You can't 6 !" To each he 7 : "Are you going to help me?" And then he went back to his digging. The fire fighter 8 and tried to pull him away: "Fires are breaking out, explosions are happening everywhere. You're 9 ."To which this loving, 10 father asked:"Are you going to help me?" He went on 11 he needed to know,"Is my boy alive or is he dead?" He dug for eight hours…l2 hours…36 hours…then, in the 38th hours, he pulled back a large stone and 12 his son. He 13 : "ARMAND!"He heard back:" Dad?It's me, Dad! I told the other kids not to 14 . I told them that if you were 15 , you'd save me and when you saved me, they'd be saved. You 16 , no matter what happens, I'll always be there for you!" "What's going on in there?" the father asked. "There are l4 of us 17 out of 33, Dad. We're scared but 18 you're here. When the building collapsed, it 19 a triang1e (三角形), and it saved us." " 20 , boy!" "Let the other kids out first, because I know you'll get me! I know you'll always be there for me!" | ||||
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